Counties in Oregon by average annual temperature

Benton County had the highest average annual temperature of 36 counties in 2021, at 53.7 °F. Wallowa County had the lowest, at 45 °F. The median was 50.6 °F and the figure for Oregon was 49.2 °F. Source: NOAA National Centers for Environmental Information.

Highest53.7Benton County

Lowest45Wallowa County

Median50.636 counties

Oregon49.2History

All counties, 2021

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

Full ranking

Rank	Counties	2021 °F	Change on 2020
1	Benton County	53.7	+1.1%
2	Curry County	53.5	-0.9%
3	Coos County	53	-0.7%
3	Polk County	53	+1%
5	Yamhill County	52.9	+0.6%
6	Multnomah County	52.8	+0.6%
7	Gilliam County	52.5	+1.5%
8	Josephine County	52.4	-0.4%
9	Lincoln County	52.3	-0.2%
10	Sherman County	52.2	+1.4%
11	Washington County	52.1	0%
12	Douglas County	52	+0.2%
13	Morrow County	51.8	+1.2%
14	Columbia County	51.6	-0.2%
14	Jackson County	51.6	-0.2%
16	Marion County	51.1	+0.6%
17	Lane County	51	+0.4%
18	Clatsop County	50.6	-0.4%
18	Umatilla County	50.6	+0.8%
20	Linn County	50.5	+0.6%
21	Tillamook County	50.3	-0.4%
21	Wasco County	50.3	+0.8%
23	Malheur County	50.1	+1.6%
24	Clackamas County	49.7	+0.4%
25	Jefferson County	49.4	+0.6%
26	Wheeler County	49	+0.8%
27	Harney County	48.1	+1.3%
28	Crook County	47.7	+0.6%
29	Baker County	47.4	+1.3%
30	Lake County	47.2	+1.1%
31	Hood River County	47.1	+0.4%
32	Klamath County	46.4	+0.7%
33	Union County	46.1	+0.9%
34	Deschutes County	46	+0.7%
34	Grant County	46	+1.1%
36	Wallowa County	45	+1.1%

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 Oregon by average annual temperature, 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 average temperature, counties, Counties in Oregon by average annual temperature, 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/average-annual-temperature/oregon-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 average temperature, counties. Counties in Oregon by average annual temperature, 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/average-annual-temperature/oregon-counties?period=2021.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Counties in Oregon by average annual temperature, 2021 [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/oregon-counties?period=2021 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_oregon_by_2021,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Counties in Oregon by average annual temperature, 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/average-annual-temperature/oregon-counties?period=2021. 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 Oregon by average annual temperature, 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/average-annual-temperature/oregon-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/oregon-counties?period=2021.
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 53.7 °F in 2021, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

Wallowa County, with 45 °F 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 average temperature, counties. Retrieved 2026-10-12.