Frost dates in Penobscot County, Maine
The average last spring frost in Penobscot County falls May 1 to May 17 and the average first fall frost Sep 28 to Oct 8, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b to 5a. Places: Bangor, Bradley, Brewer, Corinna, Dexter, East Millinocket. 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 |
|---|---|---|---|---|
| 04401 | Bangor | May 4 | Oct 4 | 5a |
| 04410 | May 13 | Sep 28 | 5a | |
| 04411 | Bradley | May 1 | Oct 6 | 5a |
| 04412 | Brewer | May 4 | Oct 4 | 5a |
| 04417 | May 4 | Oct 6 | 5a | |
| 04418 | May 13 | Sep 28 | 5a | |
| 04419 | May 4 | Oct 4 | 5a | |
| 04422 | May 15 | Sep 28 | 5a | |
| 04427 | May 8 | Oct 3 | 5a | |
| 04428 | May 1 | Oct 6 | 5a | |
| 04430 | East Millinocket | May 17 | Sep 29 | 5a |
| 04434 | May 8 | Oct 3 | 5a | |
| 04435 | May 8 | Oct 3 | 5a | |
| 04444 | Hampden | May 4 | Oct 4 | 5a |
| 04448 | Howland | May 4 | Oct 6 | 5a |
| 04449 | May 13 | Sep 28 | 5a | |
| 04450 | May 4 | Oct 4 | 5a | |
| 04453 | May 4 | Oct 6 | 5a | |
| 04455 | May 4 | Oct 6 | 5a | |
| 04456 | May 4 | Oct 4 | 5a | |
| 04457 | Lincoln | May 4 | Oct 6 | 5a |
| 04460 | May 17 | Sep 29 | 5a | |
| 04461 | Milford | May 13 | Sep 28 | 5a |
| 04468 | Old Town | May 13 | Sep 28 | 5a |
| 04469 | Orono | May 1 | Oct 6 | 5a |
| 04473 | Orono | May 1 | Oct 6 | 5a |
| 04474 | May 4 | Oct 4 | 5a | |
| 04475 | May 4 | Oct 6 | 5a | |
| 04487 | May 6 | Oct 8 | 5a | |
| 04488 | May 8 | Oct 3 | 5a | |
| 04489 | Old Town | May 1 | Oct 6 | 5a |
| 04493 | May 4 | Oct 6 | 5a | |
| 04495 | May 4 | Oct 6 | 5a | |
| 04765 | Patten | May 13 | Sep 30 | 4b |
| 04777 | May 13 | Sep 30 | 5a | |
| 04928 | Corinna | May 8 | Oct 3 | 4b |
| 04930 | Dexter | May 8 | Oct 3 | 5a |
| 04932 | May 8 | Oct 3 | 5a | |
| 04939 | May 15 | Sep 28 | 5a | |
| 04953 | Newport | May 8 | Oct 3 | 4b |
| 04969 | May 8 | Oct 3 | 5a |
Nearby counties
Piscataquis County Waldo County Somerset County Hancock County Washington County Kennebec County
All Maine counties · Download Maine frost dates (CSV)
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