Frost Dates & Planting Calendars in Alaska
Typical last spring frost, first fall frost, and growing-season length for 20 cities in Alaska, based on NOAA 1991–2020 climate normals. Click a city for its full frost-date summary, monthly temperature chart, and 42-crop planting calendar.
| City | Last Spring Frost (typical) | First Fall Frost (typical) | Growing Season | USDA Zone |
|---|---|---|---|---|
| Anchorage | May 1 | September 29 | 150 days | 5b |
| Fairbanks | May 16 | September 6 | 112 days | 3a |
| Juneau | April 20 | October 22 | 183 days | 7a |
| Eagle River | May 9 | September 26 | 139 days | 5a |
| Badger | May 22 | September 2 | 102 days | 2a |
| Knik-Fairview | May 18 | September 20 | 124 days | 5a |
| College | May 18 | September 6 | 111 days | 2b |
| Wasilla | May 16 | September 23 | 128 days | 5a |
| Sitka | May 3 | October 18 | 166 days | 7b |
| Lakes | May 16 | September 23 | 128 days | 5a |
| Ketchikan | April 4 | November 9 | 218 days | 7b |
| Tanaina | May 16 | September 23 | 128 days | 5a |
| Kalifornsky | June 11 | September 1 | 75 days | 4b |
| Kenai | May 24 | September 12 | 110 days | 5a |
| Meadow Lakes | May 16 | September 23 | 128 days | 4b |
| Palmer | May 6 | September 25 | 140 days | 5a |
| Elmendorf Air Force Base | May 9 | September 26 | 138 days | 5a |
| Bethel | May 21 | September 22 | 122 days | 4a |
| Kodiak | April 29 | October 14 | 168 days | 7a |
| Sterling | May 20 | September 21 | 123 days | 4b |