Geography of Idaho#Area

The landscape is rugged, with some of the largest unspoiled natural areas in the United States. For example, at 2.3 million acres (930,000 ha), the Frank Church-River of No Return Wilderness Area is the largest contiguous area of protected wilderness in the continental United States. Idaho is a Rocky Mountain state with abundant natural resources and scenic areas. The state has snow-capped mountain ranges, rapids, vast lakes and steep canyons. The waters of the Snake River run through Hells Canyon, the deepest gorge in the United States. Shoshone Falls falls down cliffs from a height greater than Niagara Falls.

By far, the most important river in Idaho is the Snake River, a major tributary of the Columbia River. The Snake River flows out from Yellowstone in northwestern Wyoming through the Snake River Plain in southern Idaho before turning north, leaving the state at Lewiston before joining the Columbia in Kennewick. Other major rivers are the Clark Fork/Pend Oreille River, the Spokane River, and, many major tributaries of the Snake River, including the Clearwater River, the Salmon River, the Boise River, and the Payette River. The Salmon River empties into the Snake in Hells Canyon and forms the southern boundary of Nez Perce County on its north shore, of which Lewiston is the county seat. The Port of Lewiston, at the confluence of the Clearwater and the Snake Rivers is the farthest inland seaport on the West Coast at 465 river miles from the Pacific at Astoria, Oregon.{{cite web |url=http://www.u-s-history.com/pages/h2812.html |title=Port of Lewiston |publisher=US history |access-date=July 30, 2010 |archive-url=https://web.archive.org/web/20110622052243/http://www.u-s-history.com/pages/h2812.html |archive-date=June 22, 2011 |url-status=live }}

File:Grand Canyon of yellowstone.jpg

The vast majority of Idaho's population lives in the Snake River Plain, a valley running from across the entirety of southern Idaho from east to west. The valley contains the major cities of Boise, Meridian, Nampa, Caldwell, Twin Falls, Idaho Falls, and Pocatello. The plain served as an easy pass through the Rocky Mountains for westward-bound settlers on the Oregon Trail, and many settlers chose to settle the area rather than risking the treacherous route through the Blue Mountains and the Cascade Range to the west. The western region of the plain is known as the Treasure Valley, bound between the Owyhee Mountains to the southwest and the Boise Mountains to the northeast. The central region of the Snake River Plain is known as the Magic Valley.

Idaho's highest point is Borah Peak, {{convert|12662|ft|0|abbr=on}}, in the Lost River Range north of Mackay. In 1983, an earthquake there caused two fatalities.{{cite news |url=https://news.google.com/newspapers?id=uldWAAAAIBAJ&sjid=5u4DAAAAIBAJ&pg=5273%2C7162184 |work=Spokesman-Review |location=(Spokane, Washington) |last=Sher |first=Jeff |title=Killer quake rocks Northwest |date=October 29, 1983 |page=1}}{{cite news |url=https://news.google.com/newspapers?id=0jtWAAAAIBAJ&sjid=OOkDAAAAIBAJ&pg=5950%2C7501138 |work=Eugene Register-Guard |location=(Oregon) |agency=(Los Angeles Times) |title=Quake jolts 8 states, kills 2 children |date=October 29, 1983 |page=1A}} Idaho's lowest point, {{convert|710|ft|m|0|abbr=on}}, is in Lewiston, where the Clearwater River joins the Snake River and continues into Washington. The Sawtooth Range is often considered Idaho's most famous mountain range.{{cite web |url= http://www.idahoaclimbingguide.com/id27.htm |title= Sawtooth Range |publisher= Idaho climbing guide |access-date= July 30, 2010 |url-status= dead |archive-url= https://web.archive.org/web/20110615075042/http://www.idahoaclimbingguide.com/id27.htm |archive-date= June 15, 2011}} Other mountain ranges in Idaho include the Bitterroot Range, the White Cloud Mountains, the Lost River Range, the Clearwater Mountains, and the Salmon River Mountains. The only active glacier in Idaho is at Borah Peak.{{Cite web|url=https://www.ktvb.com/article/news/local/idaho/idahos-only-glacier-usgs-mount-borah/277-e89a83bf-393d-4763-a299-6ce9cdccc5ed|title=Idaho's only glacier formally recognized by USGS|date=February 26, 2021}}

Salmon-Challis National Forest is located in the east central sections of the state, with Salmon National Forest to the north and Challis National Forest to the south. The forest is in an area known as the Idaho Cobalt Belt, which consists of a {{convert|34|mile|km|adj=}} long geological formation of sedimentary rock that contains some of the largest cobalt deposits in the U.S.{{cite web |title=Idaho Is Sitting on One of the Most Important Elements on Earth |author=Michael Holtz |date=24 Jan 2022 |website=The Atlantic |url=https://www.theatlantic.com/science/archive/2022/01/cobalt-clean-energy-climate-change-idaho/621321/}}

Idaho has two time zones, with the dividing line approximately midway between Canada and Nevada. Southern Idaho, including the Boise metropolitan area, Idaho Falls, Pocatello, and Twin Falls, are in the Mountain Time Zone. A legislative error ({{usctc|15|6}} §264) theoretically placed this region in the Central Time Zone, but this was corrected with a 2007 amendment.{{cite web|url=http://uscode.house.gov/download/pls/15C6.txt |id=264 |title=Part of Idaho in fourth zone |publisher=House of representatives |place=Washington, D.C., U.S. |website=U.S. Code |url-status=dead |archive-url=https://web.archive.org/web/20060125180343/http://uscode.house.gov/download/pls/15C6.txt |archive-date=January 25, 2006 }} Areas north of the Salmon River, including Coeur d'Alene, Moscow, Lewiston, and Sandpoint, are in the Pacific Time Zone, which contains less than a quarter of the state's population and land area.

File:Köppen Climate Types Idaho.png of Idaho, using 1991-2020 climate normals.]]

Idaho's climate varies widely. Although the state's western border is about {{convert |330|mi|-1}} from the Pacific Ocean, the maritime influence is still felt in Idaho; especially, in the winter when cloud cover, humidity, and precipitation are at their maximum extent. This influence has a moderating effect in the winter where temperatures are not as low as would otherwise be expected for a northern state with predominantly high elevations.{{cite web | url = http://www.wrcc.dri.edu/narratives/IDAHO.htm | title = Climate of Idaho | website = WRCC | publisher = DRI | date = February 20, 1954 | access-date = July 30, 2010 | archive-url = https://web.archive.org/web/20110909133342/http://www.wrcc.dri.edu/narratives/IDAHO.htm | archive-date = September 9, 2011 | url-status = live }} In the panhandle, moist air masses from the coast are released as precipitation over the North Central Rockies forests, creating the North American inland temperate rainforest.{{cite web| last =Woodward| first = Susan L.| title = Inland Rainforests of the Northwest| publisher = Radford University| date= 2012–2015| url = https://php.radford.edu/~swoodwar/biomes/?page_id=2286| access-date = May 4, 2021}} The maritime influence is least prominent in the state's eastern part where the precipitation patterns are often reversed, with wetter summers and drier winters, and seasonal temperature differences are more extreme, showing a more semi-arid continental climate.{{Cite web|url=https://wrcc.dri.edu/narratives/IDAHO.htm|title=Climate of Idaho|website=Western Regional Climate Center|access-date=February 20, 2018|archive-url=https://web.archive.org/web/20171120183856/https://wrcc.dri.edu/narratives/IDAHO.htm|archive-date=November 20, 2017|url-status=live}}

Idaho can be hot, although extended periods over {{convert|98|°F|°C|abbr=on}} are rare, except for the lowest point in elevation, Lewiston, which correspondingly sees little snow. Boise receives around {{convert|18|in|cm|0}} of snow annually.{{cite web

|url = http://cdo.ncdc.noaa.gov/climatenormals/clim20/id/101022.pdf

|title = NCDC: U.S. Climate Normals

|access-date = May 15, 2010

|publisher = National Oceanic and Atmospheric Administration

|archive-url = https://web.archive.org/web/20140712144820/http://cdo.ncdc.noaa.gov/climatenormals/clim20/id/101022.pdf

|archive-date = July 12, 2014

|url-status = dead

|df = mdy-all

}} Hot summer days are tempered by the low relative humidity and cooler evenings during summer months since, for most of the state, the highest diurnal difference in temperature is often in the summer.{{cite web |url= https://wrcc.dri.edu/narratives/IDAHO.htm |title= Climate of Idaho |website= WRCC—DRI |date= February 20, 1954 |access-date= January 23, 2017 |archive-url= https://web.archive.org/web/20170221052600/http://www.wrcc.dri.edu/narratives/IDAHO.htm |archive-date= February 21, 2017 |url-status= live }} Winters can be cold, although extended periods of bitter cold weather below zero are unusual. Idaho's all-time highest temperature of {{convert|118|F|C}} was recorded at Orofino on July 28, 1934;{{Cite web |url=https://www.ncdc.noaa.gov/climatenormals/clim81/IDnorm.pdf |title=Climatography of the United States NO.81 |publisher=National Oceanic and Atmospheric Administration |access-date=March 21, 2018 }}{{Cite web

|url=https://wrcc.dri.edu/cgi-bin/cliMAIN.pl?idorof |title=Idaho wrcc |publisher=Western Regional Climate Center|access-date=March 8, 2021}} the all-time lowest temperature of {{convert|-60|F|C}} was recorded at Island Park Dam on January 18, 1943.{{cite web |url= http://www.wrcc.dri.edu/cgi-bin/cliMAIN.pl?id4598|title= ISLAND PARK, IDAHO|publisher= Western Regional Climate Center|accessdate=January 12, 2016 }}

{{Weather box

|location = Boise (Köppen BSk){{efn|Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.}} Extremes 1875–present.{{efn|Official records have been kept at downtown Boise from January 1875 to December 1939, and at Boise Air Terminal (Airport) since January 1940. For more information, see [http://threadex.rcc-acis.org/ ThreadEx].}}

|collapsed = Yes

|single line = Yes

|width = auto

|Jan record high F = 63

|Feb record high F = 71

|Mar record high F = 82

|Apr record high F = 92

|May record high F = 100

|Jun record high F = 110

|Jul record high F = 111

|Aug record high F = 110

|Sep record high F = 104

|Oct record high F = 94

|Nov record high F = 78

|Dec record high F = 70

|year record high F = 111

|Jan avg record high F = 52.6

|Feb avg record high F = 59.5

|Mar avg record high F = 71.0

|Apr avg record high F = 80.7

|May avg record high F = 90.1

|Jun avg record high F = 98.3

|Jul avg record high F =104.5

|Aug avg record high F =102.2

|Sep avg record high F = 95.9

|Oct avg record high F = 83.9

|Nov avg record high F = 65.0

|Dec avg record high F = 54.5

|year avg record high F=105.2

|Jan high F = 38.8

|Feb high F = 46.0

|Mar high F = 55.5

|Apr high F = 62.3

|May high F = 72.3

|Jun high F = 81.4

|Jul high F = 92.7

|Aug high F = 90.7

|Sep high F = 80.0

|Oct high F = 64.8

|Nov high F = 48.8

|Dec high F = 38.8

|year high F= 64.3

|Jan mean F = 32.2

|Feb mean F = 37.5

|Mar mean F = 45.2

|Apr mean F = 50.9

|May mean F = 59.9

|Jun mean F = 67.8

|Jul mean F = 77.3

|Aug mean F = 75.8

|Sep mean F = 66.3

|Oct mean F = 53.2

|Nov mean F = 40.3

|Dec mean F = 32.1

|year mean F = 53.2

|Jan low F = 25.5

|Feb low F = 29.0

|Mar low F = 34.9

|Apr low F = 39.6

|May low F = 47.5

|Jun low F = 54.1

|Jul low F = 61.9

|Aug low F = 60.8

|Sep low F = 52.6

|Oct low F = 41.5

|Nov low F = 31.7

|Dec low F = 25.4

|year low F= 42.0

|Jan avg record low F = 10.0

|Feb avg record low F = 15.8

|Mar avg record low F = 22.8

|Apr avg record low F = 27.5

|May avg record low F = 33.0

|Jun avg record low F = 41.0

|Jul avg record low F = 50.4

|Aug avg record low F = 48.2

|Sep avg record low F = 38.4

|Oct avg record low F = 26.6

|Nov avg record low F = 17.4

|Dec avg record low F = 10.9

|year avg record low F= 5.1

|Jan record low F = −28

|Feb record low F = −15

|Mar record low F = 5

|Apr record low F = 11

|May record low F = 22

|Jun record low F = 30

|Jul record low F = 35

|Aug record low F = 32

|Sep record low F = 23

|Oct record low F = 11

|Nov record low F = −10

|Dec record low F = −25

|year record low F = -28

|precipitation colour = green

|Jan precipitation inch = 1.41

|Feb precipitation inch = 1.00

|Mar precipitation inch = 1.33

|Apr precipitation inch = 1.23

|May precipitation inch = 1.45

|Jun precipitation inch = 0.75

|Jul precipitation inch = 0.21

|Aug precipitation inch = 0.17

|Sep precipitation inch = 0.43

|Oct precipitation inch = 0.81

|Nov precipitation inch = 1.18

|Dec precipitation inch = 1.54

|year precipitation inch=11.51

|Jan snow inch = 5.3

|Feb snow inch = 3.3

|Mar snow inch = 1.2

|Apr snow inch = 0.1

|May snow inch = 0.0

|Jun snow inch = 0.0

|Jul snow inch = 0.0

|Aug snow inch = 0.0

|Sep snow inch = 0.0

|Oct snow inch = 0.1

|Nov snow inch = 2.0

|Dec snow inch = 5.6

|year snow inch=17.6

|unit precipitation days = 0.01 in

|Jan precipitation days = 11.1

|Feb precipitation days = 9.1

|Mar precipitation days = 10.1

|Apr precipitation days = 9.2

|May precipitation days = 8.4

|Jun precipitation days = 5.3

|Jul precipitation days = 2.3

|Aug precipitation days = 2.1

|Sep precipitation days = 3.9

|Oct precipitation days = 6.0

|Nov precipitation days = 9.7

|Dec precipitation days = 12.0

|year precipitation days = 89.2

|unit snow days = 0.1 in

|Jan snow days = 5.2

|Feb snow days = 3.3

|Mar snow days = 1.6

|Apr snow days = 0.3

|May snow days = 0.0

|Jun snow days = 0.0

|Jul snow days = 0.0

|Aug snow days = 0.0

|Sep snow days = 0.0

|Oct snow days = 0.1

|Nov snow days = 2.2

|Dec snow days = 5.5

|year snow days = 18.2

|Jan sun = 109.3 |Jan percentsun = 38

|Feb sun = 151.9 |Feb percentsun = 52

|Mar sun = 238.6 |Mar percentsun = 64

|Apr sun = 281.4 |Apr percentsun = 70

|May sun = 335.5 |May percentsun = 74

|Jun sun = 351.6 |Jun percentsun = 76

|Jul sun = 399.8 |Jul percentsun = 86

|Aug sun = 358.8 |Aug percentsun = 83

|Sep sun = 303.6 |Sep percentsun = 81

|Oct sun = 238.1 |Oct percentsun = 70

|Nov sun = 119.6 |Nov percentsun = 41

|Dec sun = 105.2 |Dec percentsun = 38

|year percentsun = 67

|Jan humidity = 75.0

|Feb humidity = 69.9

|Mar humidity = 59.5

|Apr humidity = 52.3

|May humidity = 48.7

|Jun humidity = 44.7

|Jul humidity = 36.1

|Aug humidity = 37.2

|Sep humidity = 45.1

|Oct humidity = 53.6

|Nov humidity = 68.5

|Dec humidity = 74.6

| Jan dew point C = −5.8

| Feb dew point C = −3.4

| Mar dew point C = −2.6

| Apr dew point C = -1.0

| May dew point C = 2.2

| Jun dew point C = 5.2

| Jul dew point C = 6.2

| Aug dew point C = 5.7

| Sep dew point C = 3.3

| Oct dew point C = 0.4

| Nov dew point C = −1.7

| Dec dew point C = −5.3

|source 1 = NOAA (relative humidity, dew point, and sun 1961–1990)

{{cite web |url=https://w2.weather.gov/climate/xmacis.php?wfo=boi |title = NowData – NOAA Online Weather Data |publisher = National Oceanic and Atmospheric Administration |access-date = 2021-10-09}}{{cite web|url=https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=USW00024131&format=pdf |title = Summary of Monthly Normals 1991-2020 |publisher = National Oceanic and Atmospheric Administration |access-date = 2021-10-11}}{{cite web |url = ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP4/72681.TXT |title = WMO Climate Normals for BOISE/AIR TERMINAL ID 1961–1990 |publisher = National Oceanic and Atmospheric Administration |archive-url = https://web.archive.org/web/20230803005737/ftp://ftp.atdd.noaa.gov/pub/GCOS/WMO-Normals/TABLES/REG_IV/US/GROUP4/72681.TXT |archive-date = 2023-08-03 |url-status = dead |access-date = 2020-09-05}}

}}

{{Weather box

|location = Idaho (Köppen Dfb/BSk){{efn|1991–2020 normals, extremes 1948–present}}

|single line = Yes

|collapsed = Yes

|width = auto

|Jan record high F = 57

|Feb record high F = 62

|Mar record high F = 73

|Apr record high F = 86

|May record high F = 94

|Jun record high F = 102

|Jul record high F = 101

|Aug record high F = 100

|Sep record high F = 100

|Oct record high F = 88

|Nov record high F = 71

|Dec record high F = 58

|Jan avg record high F = 42.3

|Feb avg record high F = 47.3

|Mar avg record high F = 64.3

|Apr avg record high F = 75.7

|May avg record high F = 84.2

|Jun avg record high F = 91.6

|Jul avg record high F = 97.0

|Aug avg record high F = 95.5

|Sep avg record high F = 89.8

|Oct avg record high F = 77.6

|Nov avg record high F = 61.6

|Dec avg record high F = 47.0

|year avg record high F = 95.7

|Jan high F = 28.7

|Feb high F = 34.2

|Mar high F = 47.2

|Apr high F = 57.5

|May high F = 67.2

|Jun high F = 76.2

|Jul high F = 86.6

|Aug high F = 85.6

|Sep high F = 74.8

|Oct high F = 59.1

|Nov high F = 43.0

|Dec high F = 30.3

|year high F =

|Jan mean F = 20.4

|Feb mean F = 24.9

|Mar mean F = 36.2

|Apr mean F = 44.4

|May mean F = 52.8

|Jun mean F = 60.4

|Jul mean F = 68.0

|Aug mean F = 66.5

|Sep mean F = 57.7

|Oct mean F = 45.0

|Nov mean F = 32.4

|Dec mean F = 21.9

|year mean F =

|Jan low F = 12.1

|Feb low F = 15.7

|Mar low F = 25.3

|Apr low F = 31.4

|May low F = 38.4

|Jun low F = 44.6

|Jul low F = 49.3

|Aug low F = 47.5

|Sep low F = 40.6

|Oct low F = 30.8

|Nov low F = 21.9

|Dec low F = 13.4

|year low F =

|Jan avg record low F = -10.4

|Feb avg record low F = -4.3

|Mar avg record low F = 7.6

|Apr avg record low F = 19.2

|May avg record low F = 25.4

|Jun avg record low F = 33.5

|Jul avg record low F = 40.8

|Aug avg record low F = 37.5

|Sep avg record low F = 29.0

|Oct avg record low F = 16.1

|Nov avg record low F = 3.9

|Dec avg record low F = -9.2

|year avg record low F = -14.6

|Jan record low F = -33

|Feb record low F = -38

|Mar record low F = -16

|Apr record low F = 13

|May record low F = 17

|Jun record low F = 29

|Jul record low F = 33

|Aug record low F = 28

|Sep record low F = 18

|Oct record low F = -3

|Nov record low F = -19

|Dec record low F = -31

|precipitation colour = green

|Jan precipitation inch = 0.67

|Feb precipitation inch = 0.56

|Mar precipitation inch = 0.81

|Apr precipitation inch = 1.03

|May precipitation inch = 1.57

|Jun precipitation inch = 1.09

|Jul precipitation inch = 0.46

|Aug precipitation inch = 0.59

|Sep precipitation inch = 0.97

|Oct precipitation inch = 0.88

|Nov precipitation inch = 0.66

|Dec precipitation inch = 0.78

|year precipitation inch =

|Jan snow inch = 5.8

|Feb snow inch = 6.5

|Mar snow inch = 3.5

|Apr snow inch = 2.3

|May snow inch = 0.6

|Jun snow inch = 0.0

|Jul snow inch = 0.0

|Aug snow inch = 0.0

|Sep snow inch = 0.0

|Oct snow inch = 0.8

|Nov snow inch = 7.2

|Dec snow inch = 9.9

|year snow inch =

|unit precipitation days = 0.01 in

|Jan precipitation days = 8.2

|Feb precipitation days = 7.0

|Mar precipitation days = 7.6

|Apr precipitation days = 8.7

|May precipitation days = 9.0

|Jun precipitation days = 6.8

|Jul precipitation days = 3.8

|Aug precipitation days = 4.9

|Sep precipitation days = 5.1

|Oct precipitation days = 6.5

|Nov precipitation days = 7.2

|Dec precipitation days = 9.5

|unit snow days = 0.1 in

|Jan snow days = 7.7

|Feb snow days = 7.4

|Mar snow days = 3.8

|Apr snow days = 2.1

|May snow days = 0.8

|Jun snow days = 0.0

|Jul snow days = 0.0

|Aug snow days = 0.0

|Sep snow days = 0.0

|Oct snow days = 0.6

|Nov snow days = 7.5

|Dec snow days = 8.7

|source 1 = National Weather Service

{{cite web

|url = https://www.weather.gov/wrh/climate?wfo=pih

|publisher = National Weather Service

|title = NOAA Online Weather Data

}}

Retrieved on September 4, 2022.

|source 2 = NOAA (average snowfall/snowy days 1981-2010)

{{cite web

|url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00024145&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL

|publisher = National Oceanic and Atmospheric Administration

|title = U.S. Climate Normals Quick Access (1991-2020)

}}

{{cite web

|url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly&stations=USW00024145&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL

|publisher = National Oceanic and Atmospheric Administration

|title = U.S. Climate Normals Quick Access (1981-2010)

}}

Retrieved September 4, 2022

}}

{{Weather box

|width=auto

|location = Lewiston (Köppen BSk){{efn|Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.}} Extremes 1881−present.

|single line = Yes

|collapsed = Yes

|Jan high F = 42.1

|Feb high F = 47.0

|Mar high F = 55.1

|Apr high F = 62.3

|May high F = 72.0

|Jun high F = 79.0

|Jul high F = 90.8

|Aug high F = 90.1

|Sep high F = 79.5

|Oct high F = 63.0

|Nov high F = 48.7

|Dec high F = 40.8

|year high F=

|Jan mean F = 36.2

|Feb mean F = 39.5

|Mar mean F = 45.4

|Apr mean F = 51.5

|May mean F = 60.1

|Jun mean F = 66.5

|Jul mean F = 75.9

|Aug mean F = 75.2

|Sep mean F = 65.9

|Oct mean F = 52.5

|Nov mean F = 41.6

|Dec mean F = 35.2

|year mean F =

|Jan low F = 30.3

|Feb low F = 31.7

|Mar low F = 35.7

|Apr low F = 40.7

|May low F = 48.1

|Jun low F = 54.0

|Jul low F = 60.9

|Aug low F = 60.3

|Sep low F = 52.3

|Oct low F = 42.0

|Nov low F = 34.5

|Dec low F = 29.5

|year low F=

|Jan avg record high F = 55.6

|Feb avg record high F = 59.8

|Mar avg record high F = 69.0

|Apr avg record high F = 79.7

|May avg record high F = 89.8

|Jun avg record high F = 96.2

|Jul avg record high F =103.4

|Aug avg record high F =102.9

|Sep avg record high F = 94.3

|Oct avg record high F = 80.3

|Nov avg record high F = 62.8

|Dec avg record high F = 54.7

|year avg record high F=105.1

|Jan avg record low F = 14.6

|Feb avg record low F = 17.1

|Mar avg record low F = 25.5

|Apr avg record low F = 30.7

|May avg record low F = 35.7

|Jun avg record low F = 43.8

|Jul avg record low F = 49.9

|Aug avg record low F = 49.6

|Sep avg record low F = 39.9

|Oct avg record low F = 28.5

|Nov avg record low F = 20.8

|Dec avg record low F = 12.7

|year avg record low F=

|Jan record high F = 66

|Feb record high F = 72

|Mar record high F = 80

|Apr record high F = 98

|May record high F = 104

|Jun record high F = 115

|Jul record high F = 117

|Aug record high F = 115

|Sep record high F = 108

|Oct record high F = 94

|Nov record high F = 77

|Dec record high F = 67

|Jan record low F = −22

|Feb record low F = −18

|Mar record low F = 2

|Apr record low F = 20

|May record low F = 23

|Jun record low F = 34

|Jul record low F = 41

|Aug record low F = 41

|Sep record low F = 27

|Oct record low F = 15

|Nov record low F = −3

|Dec record low F = −23

|precipitation colour = green

|Jan precipitation inch = 1.13

|Feb precipitation inch = 1.04

|Mar precipitation inch = 1.30

|Apr precipitation inch = 1.44

|May precipitation inch = 1.69

|Jun precipitation inch = 1.25

|Jul precipitation inch = 0.47

|Aug precipitation inch = 0.51

|Sep precipitation inch = 0.60

|Oct precipitation inch = 1.08

|Nov precipitation inch = 1.23

|Dec precipitation inch = 1.13

|year precipitation inch =

|Jan snow inch = 2.7

|Feb snow inch = 3.8

|Mar snow inch = 0.8

|Apr snow inch = 0.0

|May snow inch = 0.0

|Jun snow inch = 0.0

|Jul snow inch = 0.0

|Aug snow inch = 0.0

|Sep snow inch = 0.0

|Oct snow inch = 0.0

|Nov snow inch = 1.3

|Dec snow inch = 4.1

|year snow inch =

|unit precipitation days = 0.01 in

|Jan precipitation days = 11.2

|Feb precipitation days = 9.6

|Mar precipitation days = 11.7

|Apr precipitation days = 11.3

|May precipitation days = 10.6

|Jun precipitation days = 8.9

|Jul precipitation days = 3.9

|Aug precipitation days = 3.4

|Sep precipitation days = 4.7

|Oct precipitation days = 8.7

|Nov precipitation days = 11.1

|Dec precipitation days = 11.1

|unit snow days = 0.1 in

|Jan snow days = 2.3

|Feb snow days = 3.1

|Mar snow days = 1.0

|Apr snow days = 0.0

|May snow days = 0.0

|Jun snow days = 0.0

|Jul snow days = 0.0

|Aug snow days = 0.0

|Sep snow days = 0.0

|Oct snow days = 0.0

|Nov snow days = 1.0

|Dec snow days = 3.6

|year snow days = 11.0

|source 1 = NOAA

{{cite web

|url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00024149&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL

|publisher = National Oceanic and Atmospheric Administration

|title = U.S. Climate Normals Quick Access

}}

Retrieved on September 22, 2022.

|source 2 = National Weather Service

{{cite web

|url = https://www.weather.gov/wrh/Climate?wfo=otx

|publisher = National Weather Service

|title = NOAA Online Weather Data

}}

Retrieved on September 22, 2022

}}

{{See also|List of rivers of Idaho}}

File:Lakecoeurdalenebig.jpg in North Idaho]]

File:Redfish lake.JPG in central Idaho]]

File:Checkerboard forest in Idaho.jpg winding through Whitetail Butte]]

{{div col|content=

• Clark Fork River
• Alturas Lake
• Bear River
• Bear Lake (Idaho–Utah)
• Boise River
• Clearwater River
• Hayden Lake
• Henry's Lake
• Kootenai River
• Lake Cascade
• Lake Cleveland
• Lake Coeur d'Alene
• Lake Lowell
• Lake Walcott
• Pend Oreille - Largest in Idaho
• Little Redfish Lake
• Lucky Peak Lake
• Moyie River
• North Fork Clearwater River
• Pack River
• Payette Lake, (McCall)
• Pettit Lake
• Priest Lake
• Perkins Lake
• Portneuf River
• Redfish Lake
• Sawtooth Lake
• Snake River - Longest
• Stanley Lake
• St. Joe River
• Warm Lake

}}

{{See also|National Parks in Idaho}}

As of 2018:{{Cite web|url=https://www.stateparks.com/idaho_parks_and_recreation_destinations.html|title=List of parks in Idaho|website=www.stateparks.com}}

{{Div col}}

• Salmon-Challis National Forest
• California National Historic Trail
• City of Rocks National Reserve
• Craters of the Moon National Monument and Preserve
• Hagerman Fossil Beds National Monument
• Lewis and Clark National Historic Trail
• Minidoka National Historic Site
• Nez Perce National Historical Park
• Oregon National Historic Trail
• Yellowstone National Park
• Pacific Northwest National Scenic Trail

{{Div col end}}

{{columns-list|colwidth=30em|

• Hells Canyon National Recreation Area
• Sawtooth National Recreation Area

}}

{{columns-list|colwidth=30em|

• Bear Lake National Wildlife Refuge
• Camas National Wildlife Refuge
• Deer Flat National Wildlife Refuge
• Frank Church—River of No Return Wilderness Area
• Grays Lake National Wildlife Refuge
• Kootenai National Wildlife Refuge
• Minidoka National Wildlife Refuge

}}

• Snake River Birds of Prey National Conservation Area

File:DSCN6179 bearlake e.jpg viewed from Bear Lake State Park]]

File:Bruneau Dunes State Park.jpg]]

{{See also|List of Idaho state parks}}

{{columns-list|colwidth=30em|

• Bear Lake State Park
• Bruneau Dunes State Park
• Castle Rocks State Park
• City of Rocks National Reserve
• Coeur d'Alene Parkway State Park
• Dworshak State Park
• Eagle Island State Park
• Farragut State Park
• Harriman State Park
• Hells Gate State Park
• Henrys Lake State Park
• Heyburn State Park
• Lake Cascade State Park
• Lake Walcott State Park
• Land of the Yankee Fork State Park
• Lucky Peak State Park
• Massacre Rocks State Park
• McCroskey State Park
• Old Mission State Park
• Ponderosa State Park
• Priest Lake State Park
• Round Lake State Park
• Thousand Springs State Park
• Three Island Crossing State Park
• Trail of the Coeur d'Alenes
• Winchester Lake State Park

}}

• Climate of Oregon
• Geography of Montana

{{notelist}}

{{reflist}}