Anchorage Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Anchorage, Alaska during each month of the year.

The average high and low temperatures are listed below monthly and annually for Anchorage, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 50, 60 or 70 °F each month in Anchorage, scroll down farther. There are also monthly and yearly counts of days with cold weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Anchorage, 2010 to 2019
High °F Low °F   High °C Low °C
25 14 January -4 -10
29 17 February -2 -8
35 20 March 1 -7
46 31 April 8 -1
57 41 May 14 5
64 50 June 18 10
67 54 July 20 12
65 52 August 18 11
57 44 September 14 7
45 33 October 7 1
30 20 November -1 -7
26 15 December -3 -9
46 32 Year 8 0
30-year temperature averages for Anchorage, 1991 to 2020
High °F Low °F   High °C Low °C
23 11 January -5 -12
27 15 February -3 -9
33 19 March 1 -7
45 30 April 7 -1
56 40 May 14 4
63 48 June 17 9
66 53 July 19 12
64 51 August 18 11
56 43 September 13 6
42 31 October 6 -1
29 18 November -2 -8
25 14 December -4 -10
44 31 Year 7 0

Days of Warm Weather in Anchorage

The temperature in Anchorage creeps above 69 degrees Fahrenheit an average of just 18 days a year and occasionally pops above 80 degrees. Anchorage's spells of 70-degree weather typically occur from May to August.

Days per month in Anchorage of at least 50, 60 or 70 °F
  50 °F
10 °C
60 °F
16 °C
70 °F
21 °C
January 0 0 0
February 0 0 0
March 0 0 0
April 9 0 0
May 27 9 1
June 30 23 5
July 31 28 8
August 31 26 4
September 26 8 0
October 6 0 0
November 0 0 0
December 0 0 0
Year 161 94 18

How Often Anchorage Has Cold Temperatures

For most of winter Anchorage's temperature remains below freezing all day long. The thermometer there drops to 0 degrees Fahrenheit or colder an average of 19 days a year.

Daytime highs of less than 33 degrees can also occur during October, November, March and April. Only during June, July and August do the temperatures in Anchorage normally stay above 32 degrees day and night.

Days in Anchorage with a minimum temperature that drops to 0, 10, or 20 °F or lower
  0 °F
-18 °C
10 °F
-12 °C
20 °F
-8 °C
January 7 14 22
February 4 9 17
March 1 7 16
April 0 0 2
May 0 0 0
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 1 4
November 2 8 16
December 5 11 21
Year 19 50 100
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Anchorage Weather
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