Anchorage Temperatures: Averages by Month

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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.

All the numbers are averages, based on climate data gathered from 1981 to 2010.

Average Anchorage temperatures
High °F Low °F   High °C Low °C
23 11 January  -5 -12
27 14 February  -3 -10
34 19 March   1   -7
45 29 April   7   -2
56 40 May 13    4
63 48 June 17    9
65 52 July 19  11
64 50 August 18  10
55 42 September 13    6
41 29 October   5   -2
28 17 November  -2   -9
25 13 December  -4 -10
44 30 Year   7   -1

Days of Warm Weather in Anchorage

The temperature in Anchorage creeps above 69 degrees Fahrenheit an average of just 12 days a year and normally doesn't get above 80 degrees. Anchorage's spells of 70-degree weather typically occur from May to August.

Warm weather during winter is scarce. A thermometer at Anchorage typically never reaches 50 °F from November to April. Usually for only a couple of days each winter month does the temperature rise above 40 degrees.

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     6   0   0
May   26   8   1
June   30 21   3
July   31 27   5
August   31 24   3
September   25   5   0
October     3   0   0
November     0   0   0
December     0   0   0
Year 152 85 12

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 20 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 13 21
February   5 10 18
March   1   5 15
April   0   1   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 18
December   5 12 21
Year 20 50 99
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

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