Counties in Alaska by average annual temperature

Prince of Wales-Hyder Census Area had the highest average annual temperature of 30 counties in 2020, at 42.6 °F. North Slope Borough had the lowest, at 15.8 °F. The median was 33.2 °F and the figure for Alaska was 27.5 °F. Source: NOAA National Centers for Environmental Information.

Highest42.6Prince of Wales-Hyder Census Area

Lowest15.8North Slope Borough

Median33.230 counties

Alaska27.5History

Map of counties, 2020

Under 26
26 to 31
31 to 33
33 to 35
35 to 39
39 and over

°F, 2020. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2020

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

Full ranking

Rank	Counties	2020 °F	Change on 2019
1	Prince of Wales-Hyder Census Area	42.6	-3.2%
2	Sitka City and Borough	40.3	-4.5%
3	Aleutians West Census Area	40.1	-3.1%
4	Ketchikan Gateway Borough	40	-3.4%
5	Wrangell City and Borough	39.6	-3.4%
6	Aleutians East Borough	38.7	-8.3%
7	Kodiak Island Borough	38.3	-9.9%
8	Hoonah-Angoon Census Area	36.8	-5.2%
9	Petersburg Borough	36.2	-4.2%
10	Bristol Bay Borough	35.5	-14.3%
11	Lake and Peninsula Borough	35.1	-13.5%
12	Dillingham Census Area	33.9	-13.7%
12	Juneau City and Borough	33.9	-5.3%
14	Haines Borough	33.5	-6.2%
15	Kenai Peninsula Borough	33.3	-12.4%
16	Yakutat City and Borough	33	-9.3%
17	Chugach Census Area	32.1	-11.8%
18	Anchorage Municipality	31.6	-13.7%
19	Bethel Census Area	31.4	-13.7%
20	Kusilvak Census Area	30.6	-12.8%
20	Skagway Municipality	30.6	-7.3%
22	Matanuska-Susitna Borough	28.4	-14.2%
23	Nome Census Area	26.6	-13.6%
24	Fairbanks North Star Borough	26.5	-16.7%
25	Denali Borough	26	-15.6%
26	Yukon-Koyukuk Census Area	25.2	-15.7%
27	Copper River Census Area	24.3	-16.8%
28	Northwest Arctic Borough	23.5	-17.8%
29	Southeast Fairbanks Census Area	23.3	-19.1%
30	North Slope Borough	15.8	-26.5%

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, 2020) [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, 2020. 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=2020. 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, 2020. 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=2020.

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, 2020 [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=2020 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_alaska_by_2020,
  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, 2020}},
  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=2020. 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, 2020
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=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/alaska-counties?period=2020.
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 42.6 °F in 2020, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

North Slope Borough, with 15.8 °F in 2020.

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.