Counties in Alaska by average annual temperature

Prince of Wales-Hyder Census Area had the highest average annual temperature of 30 counties in 2021, at 41.9 °F. North Slope Borough had the lowest, at 14.6 °F. The median was 32.1 °F and the figure for Alaska was 26.5 °F. Source: NOAA National Centers for Environmental Information.

Highest41.9Prince of Wales-Hyder Census Area

Lowest14.6North Slope Borough

Median32.130 counties

Alaska26.5History

Map of counties, 2021

Under 24
24 to 29
29 to 32
32 to 34
34 to 39
39 and over

°F, 2021. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

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	Prince of Wales-Hyder Census Area	41.9	-1.6%
2	Aleutians West Census Area	39.8	-0.7%
3	Sitka City and Borough	39.6	-1.7%
4	Ketchikan Gateway Borough	39.2	-2%
5	Aleutians East Borough	38.9	+0.5%
5	Wrangell City and Borough	38.9	-1.8%
7	Kodiak Island Borough	37.4	-2.3%
8	Hoonah-Angoon Census Area	35.9	-2.4%
9	Petersburg Borough	35.3	-2.5%
10	Lake and Peninsula Borough	34	-3.1%
11	Bristol Bay Borough	33.8	-4.8%
12	Juneau City and Borough	32.8	-3.2%
13	Dillingham Census Area	32.6	-3.8%
13	Haines Borough	32.6	-2.7%
15	Kenai Peninsula Borough	32.2	-3.3%
16	Yakutat City and Borough	31.9	-3.3%
17	Chugach Census Area	31.1	-3.1%
18	Anchorage Municipality	30.4	-3.8%
19	Bethel Census Area	30.3	-3.5%
20	Skagway Municipality	29.7	-2.9%
21	Kusilvak Census Area	28.7	-6.2%
22	Matanuska-Susitna Borough	27.6	-2.8%
23	Fairbanks North Star Borough	26.4	-0.4%
24	Denali Borough	25.8	-0.8%
25	Yukon-Koyukuk Census Area	24.6	-2.4%
26	Nome Census Area	23.8	-10.5%
27	Copper River Census Area	23.6	-2.9%
27	Southeast Fairbanks Census Area	23.6	+1.3%
29	Northwest Arctic Borough	20.9	-11.1%
30	North Slope Borough	14.6	-7.6%

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 Alaska 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 Alaska 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/alaska-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 Alaska 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/alaska-counties?period=2021.

Harvard

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

BibTeX

@misc{noaa_counties_in_alaska_by_2021,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Counties in Alaska 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/alaska-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 Alaska 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/alaska-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/alaska-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?

Prince of Wales-Hyder Census Area, with 41.9 °F in 2021, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

North Slope Borough, with 14.6 °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.