Last frost date in Princeton, New Jersey
April 25
Average last frost in spring. In an early year (1 in 10) it's over by April 12; in a late year (1 in 10) it comes after May 12.
October 16
Average first frost in fall. 1 year in 10 it comes by October 4.
Source: NOAA U.S. Climate Normals 1991–2020, station Hightstown 2 W (USC00283951), 8.3 miles from Princeton, elevation 100 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 12 | Apr 25 | May 12 |
| First frost in fall | Oct 4 | Oct 16 | Oct 29 |
Frost-free days in an average year: 173
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 8 | Oct 6 |
| Frost (32°F) | Every year | Apr 25 | Oct 16 |
| Hard freeze (28°F) | Every year | Apr 10 | Oct 28 |
Nights at 32°F or colder in an average year: 114
What to plant now in Princeton
- Spring planting calendar for an average last frost around April 20 Princeton: April 25
- Fall planting calendar for an average first frost around October 20 Princeton: October 16
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 Jersey
- Trenton 11 mi · last frost Apr 17
- New Brunswick 15 mi · last frost Apr 15
- Somerville 15 mi · last frost Apr 30
- Burlington 22 mi · last frost Apr 15
- Freehold 22 mi · last frost Apr 17
Updated