Counties in Alaska by average annual temperature

Prince of Wales-Hyder Census Area had the highest average annual temperature of 30 counties in 2018, at 44.3 °F. North Slope Borough had the lowest, at 18.7 °F. The median was 34.7 °F and the figure for Alaska was 30.4 °F. Source: NOAA National Centers for Environmental Information.

Highest44.3Prince of Wales-Hyder Census Area

Lowest18.7North Slope Borough

Median34.730 counties

Alaska30.4History

Map of counties, 2018

Under 29
29 to 33
33 to 35
35 to 38
38 to 41
41 and over

°F, 2018. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2018

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

Full ranking

Rank	Counties	2018 °F	Change on 2017
1	Prince of Wales-Hyder Census Area	44.3	+2.8%
2	Ketchikan Gateway Borough	41.7	+3%
3	Sitka City and Borough	41.6	+3.2%
4	Wrangell City and Borough	41.1	+3.5%
5	Aleutians West Census Area	41	+4.3%
6	Aleutians East Borough	40.6	+5.5%
6	Kodiak Island Borough	40.6	+5.7%
8	Bristol Bay Borough	39.1	+6.5%
9	Lake and Peninsula Borough	38.2	+7%
10	Hoonah-Angoon Census Area	38.1	+3.8%
11	Petersburg Borough	37.3	+3.3%
12	Dillingham Census Area	37.1	+6.3%
13	Kenai Peninsula Borough	35.9	+7.2%
14	Yakutat City and Borough	34.9	+5.1%
15	Juneau City and Borough	34.8	+4.2%
16	Haines Borough	34.6	+4.5%
17	Bethel Census Area	34.5	+5.2%
18	Anchorage Municipality	34.4	+6.8%
19	Chugach Census Area	34.1	+4.9%
20	Kusilvak Census Area	33.7	+4.7%
21	Skagway Municipality	31.4	+4.3%
22	Matanuska-Susitna Borough	31.3	+5.4%
23	Nome Census Area	29.9	+6%
24	Fairbanks North Star Borough	29.8	+1.7%
25	Denali Borough	29.4	+3.9%
26	Yukon-Koyukuk Census Area	28.5	+1.8%
27	Northwest Arctic Borough	26.9	+5.5%
28	Southeast Fairbanks Census Area	26.8	+3.1%
29	Copper River Census Area	26.7	+5.1%
30	North Slope Borough	18.7	-3.6%

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, 2018) [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, 2018. 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=2018. 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, 2018. 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=2018.

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, 2018 [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=2018 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_alaska_by_2018,
  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, 2018}},
  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=2018. 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, 2018
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=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/alaska-counties?period=2018.
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 44.3 °F in 2018, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

North Slope Borough, with 18.7 °F in 2018.

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.