Counties in Wyoming by annual precipitation

Teton County had the highest annual precipitation of 23 counties in 2021, at 31.51 inches. Sweetwater County had the lowest, at 9.39 inches. The median was 13.47 inches and the figure for Wyoming was 14.37 inches. Source: NOAA National Centers for Environmental Information.

Highest31.51Teton County

Lowest9.39Sweetwater County

Median13.4723 counties

Wyoming14.37History

Map of counties, 2021

Under 12
12 to 13
13 to 14
14 to 16
16 and over

inches, 2021. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2021 inches	Change on 2020
1	Teton County	31.51	-6.8%
2	Lincoln County	20.29	+13.6%
3	Park County	18.51	-9.8%
4	Sublette County	16.54	+10.3%
5	Niobrara County	15.87	+59.8%
6	Carbon County	15.38	+44.7%
7	Fremont County	14.48	+43.2%
8	Sheridan County	14.07	+7.7%
9	Laramie County	13.85	+34.7%
10	Weston County	13.76	+45%
11	Albany County	13.53	+29.3%
12	Converse County	13.47	+58.1%
13	Uinta County	12.86	+63.8%
14	Hot Springs County	12.75	+47.1%
15	Natrona County	12.01	+84.5%
16	Johnson County	11.81	+19.2%
17	Goshen County	11.79	+37.3%
18	Platte County	11.76	+43.8%
19	Crook County	11.59	-10.6%
20	Big Horn County	10.94	+8%
21	Washakie County	10.76	+42.1%
22	Campbell County	10.63	+6.3%
23	Sweetwater County	9.39	+49%

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 Wyoming by annual precipitation, 2021) [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 Wyoming by annual precipitation, 2021. 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/wyoming-counties?period=2021. 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 Wyoming by annual precipitation, 2021. 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/wyoming-counties?period=2021.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Wyoming by annual precipitation, 2021 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/annual-precipitation/wyoming-counties?period=2021 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_wyoming_by_2021,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Wyoming by annual precipitation, 2021}},
  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/wyoming-counties?period=2021. 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 Wyoming by annual precipitation, 2021
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/wyoming-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/wyoming-counties?period=2021.
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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Questions

Which county has the highest annual precipitation?

Teton County, with 31.51 inches in 2021, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Sweetwater County, with 9.39 inches in 2021.

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.