Counties in Idaho by annual precipitation

Clearwater County had the highest annual precipitation of 44 counties in 2019, at 38.36 inches. Jefferson County had the lowest, at 10.11 inches. The median was 22.2 inches and the figure for Idaho was 23.41 inches. Source: NOAA National Centers for Environmental Information.

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Highest38.36Clearwater County
Lowest10.11Jefferson County
Median22.244 counties
Idaho23.41History

Map of counties, 2019

Ada County: 13.94 inchesAdams County: 33.17 inchesBannock County: 21.41 inchesBear Lake County: 25.53 inchesBenewah County: 27.35 inchesBingham County: 14.99 inchesBlaine County: 20.41 inchesBoise County: 31.72 inchesBonner County: 27.52 inchesBonneville County: 23.14 inchesBoundary County: 31.45 inchesButte County: 14.52 inchesCamas County: 23.93 inchesCanyon County: 11.92 inchesCaribou County: 25.67 inchesCassia County: 18.83 inchesClark County: 16.78 inchesClearwater County: 38.36 inchesCuster County: 22.76 inchesElmore County: 20.86 inchesFranklin County: 27.42 inchesFremont County: 24.7 inchesGem County: 21.63 inchesGooding County: 10.86 inchesIdaho County: 34.14 inchesJefferson County: 10.11 inchesJerome County: 10.39 inchesKootenai County: 27.58 inchesLatah County: 28.36 inchesLemhi County: 18.65 inchesLewis County: 27.34 inchesLincoln County: 10.64 inchesMadison County: 17.22 inchesMinidoka County: 10.98 inchesNez Perce County: 23.29 inchesOneida County: 20.82 inchesOwyhee County: 14.45 inchesPayette County: 16.54 inchesPower County: 19.06 inchesShoshone County: 37.05 inchesTeton County: 26.91 inchesTwin Falls County: 14.6 inchesValley County: 33.47 inchesWashington County: 24.63 inches
  • Under 14
  • 14 to 19
  • 19 to 22
  • 22 to 26
  • 26 to 28
  • 28 and over
inches, 2019. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2019

Clearwater County: 38.36 inchesClearwater County38.36Shoshone County: 37.05 inchesShoshone County37.05Idaho County: 34.14 inchesIdaho County34.14Valley County: 33.47 inchesValley County33.47Adams County: 33.17 inchesAdams County33.17Boise County: 31.72 inchesBoise County31.72Boundary County: 31.45 inchesBoundary County31.45Latah County: 28.36 inchesLatah County28.36Kootenai County: 27.58 inchesKootenai County27.58Bonner County: 27.52 inchesBonner County27.52Franklin County: 27.42 inchesFranklin County27.42Benewah County: 27.35 inchesBenewah County27.35Lewis County: 27.34 inchesLewis County27.34Teton County: 26.91 inchesTeton County26.91Caribou County: 25.67 inchesCaribou County25.67Bear Lake County: 25.53 inchesBear Lake County25.53Fremont County: 24.7 inchesFremont County24.7Washington County: 24.63 inchesWashington County24.63Camas County: 23.93 inchesCamas County23.93Nez Perce County: 23.29 inchesNez Perce County23.29Bonneville County: 23.14 inchesBonneville County23.14Custer County: 22.76 inchesCuster County22.76Gem County: 21.63 inchesGem County21.63Bannock County: 21.41 inchesBannock County21.41Elmore County: 20.86 inchesElmore County20.86Oneida County: 20.82 inchesOneida County20.82Blaine County: 20.41 inchesBlaine County20.41Power County: 19.06 inchesPower County19.06Cassia County: 18.83 inchesCassia County18.83Lemhi County: 18.65 inchesLemhi County18.65Madison County: 17.22 inchesMadison County17.22Clark County: 16.78 inchesClark County16.78Payette County: 16.54 inchesPayette County16.54Bingham County: 14.99 inchesBingham County14.99Twin Falls County: 14.6 inchesTwin Falls County14.6Butte County: 14.52 inchesButte County14.52Owyhee County: 14.45 inchesOwyhee County14.45Ada County: 13.94 inchesAda County13.94Canyon County: 11.92 inchesCanyon County11.92Minidoka County: 10.98 inchesMinidoka County10.98Gooding County: 10.86 inchesGooding County10.86Lincoln County: 10.64 inchesLincoln County10.64Jerome County: 10.39 inchesJerome County10.39Jefferson County: 10.11 inchesJefferson County10.11Clearwater County: 38.36 inchesClearwater County38.36Shoshone County: 37.05 inchesShoshone County37.05Idaho County: 34.14 inchesIdaho County34.14Valley County: 33.47 inchesValley County33.47Adams County: 33.17 inchesAdams County33.17Boise County: 31.72 inchesBoise County31.72Boundary County: 31.45 inchesBoundary County31.45Latah County: 28.36 inchesLatah County28.36Kootenai County: 27.58 inchesKootenai County27.58Bonner County: 27.52 inchesBonner County27.52Franklin County: 27.42 inchesFranklin County27.42Benewah County: 27.35 inchesBenewah County27.35Lewis County: 27.34 inchesLewis County27.34Teton County: 26.91 inchesTeton County26.91Caribou County: 25.67 inchesCaribou County25.67Bear Lake County: 25.53 inchesBear Lake County25.53Fremont County: 24.7 inchesFremont County24.7Washington County: 24.63 inchesWashington County24.63Camas County: 23.93 inchesCamas County23.93Nez Perce County: 23.29 inchesNez Perce County23.29Bonneville County: 23.14 inchesBonneville County23.14Custer County: 22.76 inchesCuster County22.76Gem County: 21.63 inchesGem County21.63Bannock County: 21.41 inchesBannock County21.41Elmore County: 20.86 inchesElmore County20.86Oneida County: 20.82 inchesOneida County20.82Blaine County: 20.41 inchesBlaine County20.41Power County: 19.06 inchesPower County19.06Cassia County: 18.83 inchesCassia County18.83Lemhi County: 18.65 inchesLemhi County18.65Madison County: 17.22 inchesMadison County17.22Clark County: 16.78 inchesClark County16.78Payette County: 16.54 inchesPayette County16.54Bingham County: 14.99 inchesBingham County14.99Twin Falls County: 14.6 inchesTwin Falls County14.6Butte County: 14.52 inchesButte County14.52Owyhee County: 14.45 inchesOwyhee County14.45Ada County: 13.94 inchesAda County13.94Canyon County: 11.92 inchesCanyon County11.92Minidoka County: 10.98 inchesMinidoka County10.98Gooding County: 10.86 inchesGooding County10.86Lincoln County: 10.64 inchesLincoln County10.64Jerome County: 10.39 inchesJerome County10.39Jefferson County: 10.11 inchesJefferson County10.11
inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

RankCounties2019
inches
Change on 2018
1Clearwater County38.36-18.4%
2Shoshone County37.05-17.6%
3Idaho County34.14-13.2%
4Valley County33.47+17.6%
5Adams County33.17+25.9%
6Boise County31.72+32.3%
7Boundary County31.45-13.7%
8Latah County28.36-7.6%
9Kootenai County27.58-7.2%
10Bonner County27.52-17.7%
11Franklin County27.42+61.6%
12Benewah County27.35-11.1%
13Lewis County27.34+1.8%
14Teton County26.91+4.4%
15Caribou County25.67+31.2%
16Bear Lake County25.53+41.5%
17Fremont County24.7+11.3%
18Washington County24.63+42.1%
19Camas County23.93+37.4%
20Nez Perce County23.29+1.3%
21Bonneville County23.14+7.3%
22Custer County22.76+18.6%
23Gem County21.63+52.4%
24Bannock County21.41+43.3%
25Elmore County20.86+31.5%
26Oneida County20.82+62.9%
27Blaine County20.41+35%
28Power County19.06+32.1%
29Cassia County18.83+34%
30Lemhi County18.65-7.7%
31Madison County17.22-1.7%
32Clark County16.78+1.2%
33Payette County16.54+75.8%
34Bingham County14.99+14.9%
35Twin Falls County14.6+41.2%
36Butte County14.52+15.2%
37Owyhee County14.45+39.7%
38Ada County13.94+39.4%
39Canyon County11.92+58.3%
40Minidoka County10.98+18.6%
41Gooding County10.86+26.7%
42Lincoln County10.64+20%
43Jerome County10.39+19.6%
44Jefferson County10.11-4.2%

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, 2019) [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, 2019. 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=2019. 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, 2019. 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=2019.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Idaho by annual precipitation, 2019 [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=2019 (Accessed: 12 October 2026).

BibTeX
@misc{noaa_counties_in_idaho_by_2019,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Idaho by annual precipitation, 2019}},
  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=2019. 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, 2019
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=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/idaho-counties?period=2019.
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?

Clearwater County, with 38.36 inches in 2019, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Jefferson County, with 10.11 inches in 2019.

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