New Hampshire Frost Dates
New Hampshire has a fairly short growing season, especially in the mountains and northern interior where cold lingers. Gardeners along the coast and in the southern part of the state usually get gentler frost timing, while higher terrain and inland valleys demand extra patience.
Look up your exact frost dates
Frost timing shifts across New Hampshire with elevation and distance from water. Enter your ZIP code for dates from your nearest weather station.
New Hampshire locations
| ZIP | Area | Hardiness zone |
|---|---|---|
| 03032 | Manchester | 6a |
| 03042 | Epping | 6a |
| 03051 | Hudson | 6a |
| 03060 | Nashua | 6a |
| 03062 | Nashua | 6a |
| 03064 | Nashua | 6a |
| 03103 | Manchester | 6a |
| 03109 | Manchester | 6a |
| 03240 | Canaan | 5a |
| 03282 | Fairlee | 5a |
| 03584 | Lancaster | 4b |
| 03773 | Newport | 5a |
| 03784 | Lebanon | 5a |
| 03823 | Dover | 6a |
| 03824 | Durham | 6a |
| 03840 | Portsmouth | 6a |
| 03847 | North Conway | 5b |
| 03860 | North Conway | 5a |
| 03883 | Center Sandwich | 5a |
| 03886 | Center Sandwich | 5a |
| 03031 | Amherst | 6a |
| 03033 | Milford | 6a |
| 03034 | South Hooksett | 6a |
| 03036 | Raymond | 6a |
| 03037 | Raymond | 6a |
| 03038 | Derry | 6a |
| 03043 | Francestown | 6a |
| 03044 | Epping | 6a |
| 03045 | Goffstown | 6a |
| 03046 | Concord | 6a |
| 03047 | Peterborough | 6a |
| 03048 | Greenville | 6a |
| 03049 | Nashua | 6a |
| 03052 | East Merrimack | 6a |
| 03053 | Londonderry | 6a |
| 03054 | East Merrimack | 6a |
| 03055 | Milford | 6a |
| 03057 | Klondike Corner | 6a |
| 03063 | Nashua | 6a |
| 03070 | New Boston | 6a |
| 03071 | Greenville | 6a |
| 03076 | Methuen | 6a |
| 03077 | Raymond | 6a |
| 03079 | Methuen | 6a |
| 03082 | Wilton | 6a |
| 03084 | Greenville | 6a |
| 03086 | Wilton | 6a |
| 03087 | Londonderry | 6a |
| 03101 | Manchester | 6a |
| 03102 | Manchester | 6a |
| 03104 | Manchester | 6a |
| 03106 | Hooksett | 6a |
| 03110 | Manchester | 6a |
| 03215 | Bartlett | 5a |
| 03216 | Franklin | 5b |
| 03217 | Plymouth | 5b |
| 03218 | Pittsfield | 5b |
| 03220 | Belmont | 5b |
| 03221 | Bradford | 5b |
| 03222 | Bristol | 5b |
Source: NOAA 1991–2020 U.S. Climate Normals (public domain) and USDA 2023 Plant Hardiness Zone Map. Page updated Aug 4, 2026.