Counties in Wyoming by annual precipitation

Teton County had the highest annual precipitation of 23 counties in 2015, at 31.7 inches. Big Horn County had the lowest, at 10.7 inches. The median was 16.61 inches and the figure for Wyoming was 16.71 inches. Source: NOAA National Centers for Environmental Information.

Highest31.7Teton County

Lowest10.7Big Horn County

Median16.6123 counties

Wyoming16.71History

Map of counties, 2015

Under 13
13 to 16
16 to 17
17 to 19
19 and over

inches, 2015. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2015

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

Full ranking

Rank	Counties	2015 inches	Change on 2014
1	Teton County	31.7	-29%
2	Laramie County	21.49	+10.2%
3	Park County	21.25	-23.9%
4	Crook County	19.79	+4.7%
5	Niobrara County	19.52	+17.7%
6	Goshen County	19.27	+6.6%
7	Lincoln County	19.1	-29.8%
8	Weston County	18.38	+25.5%
9	Platte County	17.57	+2.8%
10	Campbell County	17.13	+7.7%
11	Sublette County	16.66	-27.2%
12	Sheridan County	16.61	-12.3%
13	Albany County	16.5	-6.1%
14	Converse County	16.33	+11%
15	Carbon County	15.59	-3.6%
16	Johnson County	15.24	-7.7%
17	Fremont County	14.88	+1.4%
18	Hot Springs County	13.49	-1.4%
19	Uinta County	13.26	-8.4%
20	Natrona County	12.81	+4.2%
21	Sweetwater County	12.18	+21.6%
22	Washakie County	12.17	-14.4%
23	Big Horn County	10.7	-28.4%

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, 2015) [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, 2015. 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=2015. 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, 2015. 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=2015.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Wyoming by annual precipitation, 2015 [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=2015 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_wyoming_by_2015,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Wyoming by annual precipitation, 2015}},
  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=2015. 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, 2015
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=2015
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/wyoming-counties?period=2015.
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 Wyoming by annual precipitation using official data, and cite the source.

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Questions

Which county has the highest annual precipitation?

Teton County, with 31.7 inches in 2015, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Big Horn County, with 10.7 inches in 2015.

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.