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.
| 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 |
| 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.
| 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.
| 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.