Counties in Idaho by annual precipitation

Shoshone County had the highest annual precipitation of 44 counties in 2022, at 46.44 inches. Jerome County had the lowest, at 6.78 inches. The median was 18.1 inches and the figure for Idaho was 22.04 inches. Source: NOAA National Centers for Environmental Information.

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Highest46.44Shoshone County
Lowest6.78Jerome County
Median18.144 counties
Idaho22.04History

Map of counties, 2022

Ada County: 12.31 inchesAdams County: 27.03 inchesBannock County: 16.15 inchesBear Lake County: 19.43 inchesBenewah County: 33.58 inchesBingham County: 12.2 inchesBlaine County: 16.06 inchesBoise County: 29.39 inchesBonner County: 35.49 inchesBonneville County: 19.21 inchesBoundary County: 38.34 inchesButte County: 11.51 inchesCamas County: 18.05 inchesCanyon County: 9.65 inchesCaribou County: 20.21 inchesCassia County: 13.91 inchesClark County: 14.15 inchesClearwater County: 44.05 inchesCuster County: 20.97 inchesElmore County: 17.7 inchesFranklin County: 19.21 inchesFremont County: 19.54 inchesGem County: 18.15 inchesGooding County: 7.88 inchesIdaho County: 35.76 inchesJefferson County: 7.45 inchesJerome County: 6.78 inchesKootenai County: 33.91 inchesLatah County: 35.84 inchesLemhi County: 18.26 inchesLewis County: 28.92 inchesLincoln County: 7.49 inchesMadison County: 11.93 inchesMinidoka County: 8.29 inchesNez Perce County: 26.95 inchesOneida County: 15.55 inchesOwyhee County: 11.13 inchesPayette County: 11.47 inchesPower County: 16.43 inchesShoshone County: 46.44 inchesTeton County: 20.28 inchesTwin Falls County: 9.63 inchesValley County: 30.84 inchesWashington County: 17.88 inches
  • Under 11
  • 11 to 15
  • 15 to 18
  • 18 to 20
  • 20 to 33
  • 33 and over
inches, 2022. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Shoshone County: 46.44 inchesShoshone County46.44Clearwater County: 44.05 inchesClearwater County44.05Boundary County: 38.34 inchesBoundary County38.34Latah County: 35.84 inchesLatah County35.84Idaho County: 35.76 inchesIdaho County35.76Bonner County: 35.49 inchesBonner County35.49Kootenai County: 33.91 inchesKootenai County33.91Benewah County: 33.58 inchesBenewah County33.58Valley County: 30.84 inchesValley County30.84Boise County: 29.39 inchesBoise County29.39Lewis County: 28.92 inchesLewis County28.92Adams County: 27.03 inchesAdams County27.03Nez Perce County: 26.95 inchesNez Perce County26.95Custer County: 20.97 inchesCuster County20.97Teton County: 20.28 inchesTeton County20.28Caribou County: 20.21 inchesCaribou County20.21Fremont County: 19.54 inchesFremont County19.54Bear Lake County: 19.43 inchesBear Lake County19.43Bonneville County: 19.21 inchesBonneville County19.21Franklin County: 19.21 inchesFranklin County19.21Lemhi County: 18.26 inchesLemhi County18.26Gem County: 18.15 inchesGem County18.15Camas County: 18.05 inchesCamas County18.05Washington County: 17.88 inchesWashington County17.88Elmore County: 17.7 inchesElmore County17.7Power County: 16.43 inchesPower County16.43Bannock County: 16.15 inchesBannock County16.15Blaine County: 16.06 inchesBlaine County16.06Oneida County: 15.55 inchesOneida County15.55Clark County: 14.15 inchesClark County14.15Cassia County: 13.91 inchesCassia County13.91Ada County: 12.31 inchesAda County12.31Bingham County: 12.2 inchesBingham County12.2Madison County: 11.93 inchesMadison County11.93Butte County: 11.51 inchesButte County11.51Payette County: 11.47 inchesPayette County11.47Owyhee County: 11.13 inchesOwyhee County11.13Canyon County: 9.65 inchesCanyon County9.65Twin Falls County: 9.63 inchesTwin Falls County9.63Minidoka County: 8.29 inchesMinidoka County8.29Gooding County: 7.88 inchesGooding County7.88Lincoln County: 7.49 inchesLincoln County7.49Jefferson County: 7.45 inchesJefferson County7.45Jerome County: 6.78 inchesJerome County6.78Shoshone County: 46.44 inchesShoshone County46.44Clearwater County: 44.05 inchesClearwater County44.05Boundary County: 38.34 inchesBoundary County38.34Latah County: 35.84 inchesLatah County35.84Idaho County: 35.76 inchesIdaho County35.76Bonner County: 35.49 inchesBonner County35.49Kootenai County: 33.91 inchesKootenai County33.91Benewah County: 33.58 inchesBenewah County33.58Valley County: 30.84 inchesValley County30.84Boise County: 29.39 inchesBoise County29.39Lewis County: 28.92 inchesLewis County28.92Adams County: 27.03 inchesAdams County27.03Nez Perce County: 26.95 inchesNez Perce County26.95Custer County: 20.97 inchesCuster County20.97Teton County: 20.28 inchesTeton County20.28Caribou County: 20.21 inchesCaribou County20.21Fremont County: 19.54 inchesFremont County19.54Bear Lake County: 19.43 inchesBear Lake County19.43Bonneville County: 19.21 inchesBonneville County19.21Franklin County: 19.21 inchesFranklin County19.21Lemhi County: 18.26 inchesLemhi County18.26Gem County: 18.15 inchesGem County18.15Camas County: 18.05 inchesCamas County18.05Washington County: 17.88 inchesWashington County17.88Elmore County: 17.7 inchesElmore County17.7Power County: 16.43 inchesPower County16.43Bannock County: 16.15 inchesBannock County16.15Blaine County: 16.06 inchesBlaine County16.06Oneida County: 15.55 inchesOneida County15.55Clark County: 14.15 inchesClark County14.15Cassia County: 13.91 inchesCassia County13.91Ada County: 12.31 inchesAda County12.31Bingham County: 12.2 inchesBingham County12.2Madison County: 11.93 inchesMadison County11.93Butte County: 11.51 inchesButte County11.51Payette County: 11.47 inchesPayette County11.47Owyhee County: 11.13 inchesOwyhee County11.13Canyon County: 9.65 inchesCanyon County9.65Twin Falls County: 9.63 inchesTwin Falls County9.63Minidoka County: 8.29 inchesMinidoka County8.29Gooding County: 7.88 inchesGooding County7.88Lincoln County: 7.49 inchesLincoln County7.49Jefferson County: 7.45 inchesJefferson County7.45Jerome County: 6.78 inchesJerome County6.78
inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

RankCounties2022
inches
Change on 2021
1Shoshone County46.44+9.1%
2Clearwater County44.05+9.9%
3Boundary County38.34+8.4%
4Latah County35.84+30%
5Idaho County35.76+4.3%
6Bonner County35.49+16.2%
7Kootenai County33.91+26.2%
8Benewah County33.58+33.4%
9Valley County30.84+4.4%
10Boise County29.39+5.7%
11Lewis County28.92+37.1%
12Adams County27.03-2.1%
13Nez Perce County26.95+49.1%
14Custer County20.97+10.4%
15Teton County20.28-13.3%
16Caribou County20.21-10.5%
17Fremont County19.54-1.2%
18Bear Lake County19.43-12.2%
19Bonneville County19.21-9.3%
19Franklin County19.21-7.2%
21Lemhi County18.26+15.5%
22Gem County18.15+2.4%
23Camas County18.05-13.6%
24Washington County17.88-4.7%
25Elmore County17.7-5.1%
26Power County16.43+17.6%
27Bannock County16.15-2.2%
28Blaine County16.06+1.7%
29Oneida County15.55+4.2%
30Clark County14.15-6%
31Cassia County13.91+0.1%
32Ada County12.31+0.7%
33Bingham County12.2-2.6%
34Madison County11.93-15.9%
35Butte County11.51-2.5%
36Payette County11.47-0.9%
37Owyhee County11.13-0.6%
38Canyon County9.65+6.5%
39Twin Falls County9.63-4.6%
40Minidoka County8.29-4.2%
41Gooding County7.88-14.3%
42Lincoln County7.49-6.4%
43Jefferson County7.45-13.8%
44Jerome County6.78-14.2%

Other periods

About this ranking

Total precipitation from January to December, in inches: rain plus the water content of snow and other frozen precipitation. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.

Values are area averages, not the reading at one weather station. NOAA revises the last two years every month.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

NOAA National Centers for Environmental Information. (2026). NOAA Climate at a Glance, January to December precipitation, counties (Counties in Idaho by annual precipitation, 2022) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping

MLA 9

NOAA Climate at a Glance, January to December precipitation, counties, Counties in Idaho by annual precipitation, 2022. NOAA National Centers for Environmental Information, 6 Oct. 2026, https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Invokely, https://invokely.ai/rankings/annual-precipitation/idaho-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December precipitation, counties. Counties in Idaho by annual precipitation, 2022. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Also distributed by Invokely, https://invokely.ai/rankings/annual-precipitation/idaho-counties?period=2022.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Idaho by annual precipitation, 2022 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/annual-precipitation/idaho-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{noaa_counties_in_idaho_by_2022,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Idaho by annual precipitation, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/idaho-counties?period=2022. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - NOAA National Centers for Environmental Information
TI  - NOAA Climate at a Glance, January to December precipitation, counties: Counties in Idaho by annual precipitation, 2022
PY  - 2026
DA  - 2026/10/06
PB  - NOAA National Centers for Environmental Information
DB  - Invokely
UR  - https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping
L2  - https://invokely.ai/rankings/annual-precipitation/idaho-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/idaho-counties?period=2022.
N1  - Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.
ER  - 
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Rank Counties in Idaho by annual precipitation using official data, and cite the source.
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Questions

Which county has the highest annual precipitation?

Shoshone County, with 46.44 inches in 2022, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Jerome County, with 6.78 inches in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Annual precipitation: other rankings

Counties in Idaho: more rankings