Counties in Idaho by annual precipitation

Shoshone County had the highest annual precipitation of 44 counties in 2020, at 47.35 inches. Lincoln County had the lowest, at 6.78 inches. The median was 18.3 inches and the figure for Idaho was 22.19 inches. Source: NOAA National Centers for Environmental Information.

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Highest47.35Shoshone County
Lowest6.78Lincoln County
Median18.344 counties
Idaho22.19History

Map of counties, 2020

Ada County: 13.31 inchesAdams County: 29.89 inchesBannock County: 14.63 inchesBear Lake County: 18.86 inchesBenewah County: 30.21 inchesBingham County: 12.4 inchesBlaine County: 12.27 inchesBoise County: 29.1 inchesBonner County: 36.09 inchesBonneville County: 21.35 inchesBoundary County: 37.17 inchesButte County: 7.77 inchesCamas County: 17.06 inchesCanyon County: 10.58 inchesCaribou County: 20.55 inchesCassia County: 13.14 inchesClark County: 12.53 inchesClearwater County: 46.54 inchesCuster County: 18.82 inchesElmore County: 17.68 inchesFranklin County: 17.77 inchesFremont County: 19.58 inchesGem County: 19.39 inchesGooding County: 7.8 inchesIdaho County: 39.65 inchesJefferson County: 7.65 inchesJerome County: 6.95 inchesKootenai County: 31.59 inchesLatah County: 32.55 inchesLemhi County: 20.22 inchesLewis County: 26.99 inchesLincoln County: 6.78 inchesMadison County: 14.28 inchesMinidoka County: 7.77 inchesNez Perce County: 24.45 inchesOneida County: 13.15 inchesOwyhee County: 10.94 inchesPayette County: 13.03 inchesPower County: 13.23 inchesShoshone County: 47.35 inchesTeton County: 24.05 inchesTwin Falls County: 9.07 inchesValley County: 32.63 inchesWashington County: 20.04 inches
  • Under 11
  • 11 to 13
  • 13 to 18
  • 18 to 21
  • 21 to 31
  • 31 and over
inches, 2020. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2020

Shoshone County: 47.35 inchesShoshone County47.35Clearwater County: 46.54 inchesClearwater County46.54Idaho County: 39.65 inchesIdaho County39.65Boundary County: 37.17 inchesBoundary County37.17Bonner County: 36.09 inchesBonner County36.09Valley County: 32.63 inchesValley County32.63Latah County: 32.55 inchesLatah County32.55Kootenai County: 31.59 inchesKootenai County31.59Benewah County: 30.21 inchesBenewah County30.21Adams County: 29.89 inchesAdams County29.89Boise County: 29.1 inchesBoise County29.1Lewis County: 26.99 inchesLewis County26.99Nez Perce County: 24.45 inchesNez Perce County24.45Teton County: 24.05 inchesTeton County24.05Bonneville County: 21.35 inchesBonneville County21.35Caribou County: 20.55 inchesCaribou County20.55Lemhi County: 20.22 inchesLemhi County20.22Washington County: 20.04 inchesWashington County20.04Fremont County: 19.58 inchesFremont County19.58Gem County: 19.39 inchesGem County19.39Bear Lake County: 18.86 inchesBear Lake County18.86Custer County: 18.82 inchesCuster County18.82Franklin County: 17.77 inchesFranklin County17.77Elmore County: 17.68 inchesElmore County17.68Camas County: 17.06 inchesCamas County17.06Bannock County: 14.63 inchesBannock County14.63Madison County: 14.28 inchesMadison County14.28Ada County: 13.31 inchesAda County13.31Power County: 13.23 inchesPower County13.23Oneida County: 13.15 inchesOneida County13.15Cassia County: 13.14 inchesCassia County13.14Payette County: 13.03 inchesPayette County13.03Clark County: 12.53 inchesClark County12.53Bingham County: 12.4 inchesBingham County12.4Blaine County: 12.27 inchesBlaine County12.27Owyhee County: 10.94 inchesOwyhee County10.94Canyon County: 10.58 inchesCanyon County10.58Twin Falls County: 9.07 inchesTwin Falls County9.07Gooding County: 7.8 inchesGooding County7.8Butte County: 7.77 inchesButte County7.77Minidoka County: 7.77 inchesMinidoka County7.77Jefferson County: 7.65 inchesJefferson County7.65Jerome County: 6.95 inchesJerome County6.95Lincoln County: 6.78 inchesLincoln County6.78Shoshone County: 47.35 inchesShoshone County47.35Clearwater County: 46.54 inchesClearwater County46.54Idaho County: 39.65 inchesIdaho County39.65Boundary County: 37.17 inchesBoundary County37.17Bonner County: 36.09 inchesBonner County36.09Valley County: 32.63 inchesValley County32.63Latah County: 32.55 inchesLatah County32.55Kootenai County: 31.59 inchesKootenai County31.59Benewah County: 30.21 inchesBenewah County30.21Adams County: 29.89 inchesAdams County29.89Boise County: 29.1 inchesBoise County29.1Lewis County: 26.99 inchesLewis County26.99Nez Perce County: 24.45 inchesNez Perce County24.45Teton County: 24.05 inchesTeton County24.05Bonneville County: 21.35 inchesBonneville County21.35Caribou County: 20.55 inchesCaribou County20.55Lemhi County: 20.22 inchesLemhi County20.22Washington County: 20.04 inchesWashington County20.04Fremont County: 19.58 inchesFremont County19.58Gem County: 19.39 inchesGem County19.39Bear Lake County: 18.86 inchesBear Lake County18.86Custer County: 18.82 inchesCuster County18.82Franklin County: 17.77 inchesFranklin County17.77Elmore County: 17.68 inchesElmore County17.68Camas County: 17.06 inchesCamas County17.06Bannock County: 14.63 inchesBannock County14.63Madison County: 14.28 inchesMadison County14.28Ada County: 13.31 inchesAda County13.31Power County: 13.23 inchesPower County13.23Oneida County: 13.15 inchesOneida County13.15Cassia County: 13.14 inchesCassia County13.14Payette County: 13.03 inchesPayette County13.03Clark County: 12.53 inchesClark County12.53Bingham County: 12.4 inchesBingham County12.4Blaine County: 12.27 inchesBlaine County12.27Owyhee County: 10.94 inchesOwyhee County10.94Canyon County: 10.58 inchesCanyon County10.58Twin Falls County: 9.07 inchesTwin Falls County9.07Gooding County: 7.8 inchesGooding County7.8Butte County: 7.77 inchesButte County7.77Minidoka County: 7.77 inchesMinidoka County7.77Jefferson County: 7.65 inchesJefferson County7.65Jerome County: 6.95 inchesJerome County6.95Lincoln County: 6.78 inchesLincoln County6.78
inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

RankCounties2020
inches
Change on 2019
1Shoshone County47.35+27.8%
2Clearwater County46.54+21.3%
3Idaho County39.65+16.1%
4Boundary County37.17+18.2%
5Bonner County36.09+31.1%
6Valley County32.63-2.5%
7Latah County32.55+14.8%
8Kootenai County31.59+14.5%
9Benewah County30.21+10.5%
10Adams County29.89-9.9%
11Boise County29.1-8.3%
12Lewis County26.99-1.3%
13Nez Perce County24.45+5%
14Teton County24.05-10.6%
15Bonneville County21.35-7.7%
16Caribou County20.55-19.9%
17Lemhi County20.22+8.4%
18Washington County20.04-18.6%
19Fremont County19.58-20.7%
20Gem County19.39-10.4%
21Bear Lake County18.86-26.1%
22Custer County18.82-17.3%
23Franklin County17.77-35.2%
24Elmore County17.68-15.2%
25Camas County17.06-28.7%
26Bannock County14.63-31.7%
27Madison County14.28-17.1%
28Ada County13.31-4.5%
29Power County13.23-30.6%
30Oneida County13.15-36.8%
31Cassia County13.14-30.2%
32Payette County13.03-21.2%
33Clark County12.53-25.3%
34Bingham County12.4-17.3%
35Blaine County12.27-39.9%
36Owyhee County10.94-24.3%
37Canyon County10.58-11.2%
38Twin Falls County9.07-37.9%
39Gooding County7.8-28.2%
40Butte County7.77-46.5%
40Minidoka County7.77-29.2%
42Jefferson County7.65-24.3%
43Jerome County6.95-33.1%
44Lincoln County6.78-36.3%

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, 2020) [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, 2020. 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=2020. 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, 2020. 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=2020.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Idaho by annual precipitation, 2020 [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=2020 (Accessed: 12 October 2026).

BibTeX
@misc{noaa_counties_in_idaho_by_2020,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Idaho by annual precipitation, 2020}},
  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=2020. 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, 2020
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=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/idaho-counties?period=2020.
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 47.35 inches in 2020, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Lincoln County, with 6.78 inches in 2020.

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