Counties in Washington by average annual temperature

Benton County had the highest average annual temperature of 39 counties in 2023, at 53.6 °F. Okanogan County had the lowest, at 44.2 °F. The median was 49.2 °F and the figure for Washington was 48.4 °F. Source: NOAA National Centers for Environmental Information.

Highest53.6Benton County

Lowest44.2Okanogan County

Median49.239 counties

Washington48.4History

Map of counties, 2023

Under 47
47 to 48
48 to 49
49 to 51
51 to 52
52 and over

°F, 2023. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

°F. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2023 °F	Change on 2022
1	Benton County	53.6	+2.9%
2	Walla Walla County	53.3	+2.7%
3	Franklin County	53.1	+3.3%
4	Clark County	52.9	+1%
5	Kitsap County	52.7	+1.3%
6	Thurston County	52.1	+1.6%
7	Grant County	51.9	+4.6%
7	Island County	51.9	+2.2%
9	San Juan County	51.6	+2.6%
10	Pacific County	51.3	+0.6%
11	Wahkiakum County	51.2	+0.6%
12	Adams County	51.1	+4.7%
12	Whitman County	51.1	+4.1%
14	Grays Harbor County	51	+1.2%
15	Cowlitz County	50.8	+0.4%
16	Mason County	50.3	+1.6%
17	Asotin County	50.2	+3.3%
18	Garfield County	50	+3.3%
19	Klickitat County	49.8	+2%
20	Douglas County	49.2	+4.9%
21	Columbia County	49.1	+2.5%
22	Spokane County	49	+4%
23	King County	48.9	+1%
24	Clallam County	48.6	+1.7%
24	Lewis County	48.6	-0.2%
26	Lincoln County	48.2	+4.6%
27	Pierce County	48	+0.4%
28	Snohomish County	47.8	+1.9%
29	Yakima County	47.7	+1.7%
30	Skagit County	47.4	+2.6%
31	Jefferson County	46.8	+1.1%
31	Stevens County	46.8	+5.9%
33	Kittitas County	46.5	+2.4%
34	Skamania County	46.4	-0.4%
35	Whatcom County	45.9	+2.9%
36	Ferry County	44.6	+6.2%
37	Chelan County	44.4	+2.3%
38	Pend Oreille County	44.3	+4.7%
39	Okanogan County	44.2	+4%

Other periods

About this ranking

Mean air temperature from January to December, in degrees Fahrenheit: the average of the 12 monthly mean temperatures. 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, so a county with mountains and valleys has one value for very different local climates. 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 average temperature, 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 average temperature, counties (Counties in Washington by average annual temperature, 2023) [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 average temperature, counties, Counties in Washington by average annual temperature, 2023. 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/average-annual-temperature/washington-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December average temperature, counties. Counties in Washington by average annual temperature, 2023. 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/average-annual-temperature/washington-counties?period=2023.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Counties in Washington by average annual temperature, 2023 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/average-annual-temperature/washington-counties?period=2023 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_washington_by_2023,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Counties in Washington by average annual temperature, 2023}},
  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/average-annual-temperature/washington-counties?period=2023. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, 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 average temperature, counties: Counties in Washington by average annual temperature, 2023
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/average-annual-temperature/washington-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/washington-counties?period=2023.
N1  - Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, 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 average annual temperature?

Benton County, with 53.6 °F in 2023, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

Okanogan County, with 44.2 °F in 2023.

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 average temperature, counties. Retrieved 2026-10-12.