Frost dates in Strafford County, New Hampshire
The average last spring frost in Strafford County falls Apr 30 to May 16 and the average first fall frost Sep 30 to Oct 18, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5b to 6a. Places: Dover, Durham, Farmington, Milton, Milton Mills, Rochester. 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 |
|---|---|---|---|---|
| 03820 | Dover | May 3 | Oct 10 | 6a |
| 03823 | May 3 | Oct 10 | 6a | |
| 03824 | Durham | May 7 | Oct 4 | 6a |
| 03825 | May 3 | Oct 10 | 6a | |
| 03835 | Farmington | Apr 30 | Oct 9 | 6a |
| 03839 | Rochester | Apr 30 | Oct 9 | 6a |
| 03851 | Milton | Apr 30 | Oct 9 | 5b |
| 03852 | Milton Mills | May 16 | Sep 30 | 5b |
| 03855 | Apr 30 | Oct 18 | 5b | |
| 03861 | May 7 | Oct 4 | 6a | |
| 03867 | Rochester | Apr 30 | Oct 9 | 6a |
| 03868 | Rochester | Apr 30 | Oct 9 | 6a |
| 03869 | May 3 | Oct 10 | 6a | |
| 03878 | Somersworth | Apr 30 | Oct 9 | 6a |
| 03884 | Apr 30 | Oct 9 | 6a | |
| 03887 | Union | May 16 | Sep 30 | 5b |
Nearby counties
Rockingham County Belknap County Merrimack County Carroll County Hillsborough County Sullivan County
All New Hampshire counties · Download New Hampshire frost dates (CSV)
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