Last frost date in Keene, New Hampshire
May 14
Average last frost in spring. In an early year (1 in 10) it's over by April 30; in a late year (1 in 10) it comes after May 28.
October 1
Average first frost in fall. 1 year in 10 it comes by September 18.
Source: NOAA U.S. Climate Normals 1991–2020, station Keene (USC00274399), 1.4 miles from Keene, elevation 511 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 30 | May 14 | May 28 |
| First frost in fall | Sept 18 | Oct 1 | Oct 14 |
Frost-free days in an average year: 138
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 27 | Sept 21 |
| Frost (32°F) | Every year | May 14 | Oct 1 |
| Hard freeze (28°F) | Every year | May 2 | Oct 10 |
Nights at 32°F or colder in an average year: 174
What to plant now in Keene
- Spring planting calendar for an average last frost around May 10 Keene: May 14
- Fall planting calendar for an average first frost around September 30 Keene: October 1
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in New Hampshire
- Claremont 30 mi · last frost May 14
- Concord 42 mi · last frost May 8
- Manchester 44 mi · last frost Apr 30
- Nashua 44 mi · last frost Apr 29
- Lebanon 47 mi · last frost May 9
Updated