Last frost date in Summit, New Jersey
April 18
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 May 6.
October 27
Average first frost in fall. 1 year in 10 it comes by October 11.
Source: NOAA U.S. Climate Normals 1991–2020, station Canoe Brook (USC00281335), 2 miles from Summit, elevation 180 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Chatham, Florham Park, Madison, Morristown and New Providence, so their frost dates are the same as Summit's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 3 | Apr 18 | May 6 |
| First frost in fall | Oct 11 | Oct 27 | Nov 10 |
Frost-free days in an average year: 189
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 30 | Oct 15 |
| Frost (32°F) | Every year | Apr 18 | Oct 27 |
| Hard freeze (28°F) | Every year | Apr 3 | Nov 6 |
Nights at 32°F or colder in an average year: 118
What to plant now in Summit
- 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 Summit: April 18
- Fall planting calendar for an average first frost around October 30 Summit: October 27
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
- Westfield 5 mi · last frost Apr 11
- Plainfield 7 mi · last frost Apr 11
- Elizabeth 10 mi · last frost Apr 2
- Newark 10 mi · last frost Apr 4
- Lincoln Park 15 mi · last frost Apr 14
Updated