Frost dates in Northwest Arctic Borough, Alaska
The average last spring frost in Northwest Arctic Borough falls May 18 to Jun 10 and the average first fall frost Sep 8 to Sep 24, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 1b to 3a. Places: Ambler, Buckland, Deering, Kiana, Kivalina, Kobuk. 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 |
|---|---|---|---|---|
| 99727 | Buckland | Jun 5 | Sep 24 | 2b |
| 99736 | Deering | Jun 5 | Sep 24 | 3a |
| 99749 | Kiana | Jun 5 | Sep 24 | 2a |
| 99750 | Kivalina | Jun 10 | Sep 11 | 3a |
| 99751 | Kobuk | May 18 | Sep 8 | 1b |
| 99752 | Red Dog Mine | Jun 5 | Sep 24 | 2b |
| 99761 | Noatak | Jun 5 | Sep 24 | 2a |
| 99763 | Noorvik | Jun 5 | Sep 24 | 2b |
| 99770 | Selawik | Jun 5 | Sep 24 | 2a |
| 99773 | Shungnak | May 18 | Sep 8 | 1b |
| 99786 | Ambler | n/a | n/a | 2a |
Nearby counties
Nome Census Area Yukon-Koyukuk Census Area North Slope Borough Kusilvak Census Area Denali Borough Fairbanks North Star Borough
All Alaska counties · Download Alaska frost dates (CSV)
Never miss a frost: get The Dial
Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.