Frost dates · 1 cities · zones 5a–5a
Alaska frost dates, city by city
Anchorage's median last spring frost is May 21.
| City | Zone | Last frost median | First frost median | Season | Jan → Dec |
|---|---|---|---|---|---|
| Anchorage | 5a | May 21 | Sep 15 | 116 d |
Medians from NOAA NCEI 1991–2020 U.S. Climate Normals at each city's nearest qualifying station; zones from the 2023 USDA Plant Hardiness Zone Map. Open a city for the 1-in-10-year dates, the station, and a planting calendar for every sauce crop.