Alaska Annual Temperatures and Records


Avg High Temp

Avg Low Temp 

Avg Annual Temp

Avg # days => 70F Avg # days <= 32F  Record High Temp  Record Low Temp
Anchorage 43.1 27.4 36.1 15 191 85/1969 -34/1975
Fairbanks 36.9 17.0 27.0 55 222 96/1969 -62/1961
Juneau 47.3 34.6 41.0 20 137 90/1975  -22/1968
Nome 33.4 19.6 26.5 6 237 86/1968  -54/1989
Alaska annual average temperature, 32.13 F degrees, coldest state in the U.S.
Alaska average Summer temperature (June, July, August)  52.3 F degrees, 50th warmest U.S. summer state
Alaska average Winter temperature (December, January, February)  2.6 F degrees, the coldest U.S. winter state

Alaska Temperature Records

  • Hottest temperature ever recorded: Fort Yukon, northeastern Alaska, 6/27/1915, 100 F
  • Coldest temperature ever recorded: Prospect Creek, central Alaska, 1/23/1971, -80 F
  • Hottest city ranked by highest average annual temperature: Blashke Island, southeastern Alaska, 46.6 F
  • Coldest city ranked by lowest average annual temperature: Franklin Bluffs, northern Alaska, 7.3 F
  • Nineteen locations in Alaska have reached or exceeded 70 degrees below zero.
  • Alaska's record for most consecutive days with the high temperature equal to or exceeding 70 degrees
    was set during three occurrences and two stations with 48 days. The record for most consecutive days with
    the low temperature equal to or below 32 degrees was set in August 1955 through June 1056 at Barrow,
    with 321 days. 

Alaska's mean annual temperatures range from the low 40s under the maritime influence in the south to 10 degrees Fahrenheit ( F) along the arctic slope north of the Brooks Mountain Range. The greatest seasonal temperature contrast is found in the central and eastern portion of the continental interior. In this area, summer heating produces average maximum temperatures in the upper 70s with extreme readings in the 90s. In winter, the lack of sunshine permits radiation to lower temperatures to the -50s and occasionally colder for two or three weeks at a time. Average winter minima in this area are -20 to -30 F. 

Elsewhere in the state, temperature contrasts are much more moderate. In the maritime zone, the summer to winter range of average temperatures is from near 60 F to the 20s. In the transition zone, temperatures range from the low 60s to near 0; in the maritime-continental zone, the range is from the low 60s to -10. The arctic slope has a range extending from the upper 40s to -20 F.

Alaska precipitation averages and extremes, precipitation and temperature data for all U.S. states and Top 10 U.S. climate extremes
Data source: National Data Climatic Center