Frost dates in Matanuska-Susitna Borough, Alaska
The average last spring frost in Matanuska-Susitna Borough falls May 9 to Jun 6 and the average first fall frost Aug 25 to Sep 26, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 3b to 5a. Places: Big Lake, Cantwell, Chase, Glacier View, Houston, Knik River. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 99623 | Point MacKenzie | May 9 | Sep 26 | 4b |
| 99645 | Knik River | May 22 | Sep 16 | 5a |
| 99652 | Big Lake | May 29 | Sep 7 | 4a |
| 99654 | Tanaina | May 16 | Sep 23 | 5a |
| 99667 | Skwentna | Jun 2 | Sep 8 | 4b |
| 99674 | Glacier View | Jun 1 | Sep 6 | 4b |
| 99676 | Chase | May 16 | Sep 16 | 4b |
| 99683 | Petersville | May 16 | Sep 16 | 4b |
| 99688 | Willow | May 15 | Sep 18 | 3b |
| 99694 | Houston | May 29 | Sep 7 | 4a |
| 99729 | Cantwell | Jun 6 | Aug 25 | 4a |
Nearby counties
Anchorage Municipality Chugach Census Area Kenai Peninsula Borough Denali Borough Copper River Census Area Fairbanks North Star Borough
All Alaska counties · Download Alaska frost dates (CSV)
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