Last frost date in New London, Connecticut
April 16
Average last frost in spring. In an early year (1 in 10) it's over by April 3; in a late year (1 in 10) it comes after April 30.
October 28
Average first frost in fall. 1 year in 10 it comes by October 13.
Source: NOAA U.S. Climate Normals 1991–2020, station Groton New London AP (USW00014707), 2.5 miles from New London, elevation 10 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Groton, so its frost dates are the same as New London's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 3 | Apr 16 | Apr 30 |
| First frost in fall | Oct 13 | Oct 28 | Nov 12 |
Frost-free days in an average year: 194
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 29 | Oct 16 |
| Frost (32°F) | Every year | Apr 16 | Oct 28 |
| Hard freeze (28°F) | Every year | Apr 3 | Nov 9 |
Nights at 32°F or colder in an average year: 107
What to plant now in New London
- Corn saladSept 15 – Nov 1Now
- Upland cressSept 15 – Nov 1Now
- Rhubarb plantsNov 1 – Dec 1Soon
- Asparagus plantsNov 15 – Jan 1Soon
- Spring planting calendar for an average last frost around April 20 New London: April 16
- Fall planting calendar for an average first frost around October 30 New London: October 28
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 Connecticut
Updated