Frost dates · Alaska
When is the first frost in Fairbanks?
In a typical year, Fairbanks’s first frost comes around September 13 and its last around May 13.
One year in ten the first frost comes as early as August 29, and nine years in ten it has arrived by September 24. One year in ten the last frost is over as early as May 2, and nine years in ten it is over by May 26. Fairbanks averages about 222 nights a year at 32°F or colder, with about 121 frost-free days in between in a typical year. It’s frost season here, and the last frost usually comes around May 13. That makes it the earliest first frost of the 117 cities we track where it freezes most years.
Last updated
A freeze is in the forecast for the next 48 hours.
Fairbanks gets its first frost by mid-September, which locals call the end of summer and everyone else calls September.
Live 48-hour check from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Frost dates, early, typical and late years
| Early year (1 in 10) | Typical | Late year (1 in 10) | |
|---|---|---|---|
| First frost | August 29 | September 13 | September 24 |
| Last frost | May 2 | May 13 | May 26 |
A frost date here is a night when the official thermometer reads 32°F or colder. Frost on the ground can show up on clear, calm nights a few degrees milder.
Cities with about the same first frost
- Casper, Wyoming: first frost around September 22
- Great Falls, Montana: first frost around September 24
- Missoula, Montana: first frost around September 26
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00026411.