Last frost date in Philadelphia, Pennsylvania
March 30
Average last frost in spring. In an early year (1 in 10) it's over by March 15; in a late year (1 in 10) it comes after April 12.
November 17
Average first frost in fall. 1 year in 10 it comes by November 4.
Source: NOAA U.S. Climate Normals 1991–2020, station Phila Franklin Inst (USC00366886), 4.1 miles from Philadelphia, elevation 60 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 15 | Mar 30 | Apr 12 |
| First frost in fall | Nov 4 | Nov 17 | Dec 4 |
Frost-free days in an average year: 232
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 8 | Nov 5 |
| Frost (32°F) | Every year | Mar 30 | Nov 17 |
| Hard freeze (28°F) | Every year | Mar 17 | Nov 29 |
Nights at 32°F or colder in an average year: 62
What to plant now in Philadelphia
- Collards plantsAug 25 – Nov 1Now
- BeetsSept 1 – Dec 1Now
- Cabbage plantsSept 1 – Dec 1Now
- CarrotsSept 1 – Nov 1Now
- DandelionSept 1 – Nov 1Now
- Head lettuce plantsSept 1 – Nov 1Now
- Leaf lettuceSept 1 – Nov 1Now
- LeeksSept 1 – Nov 1Now
- Mustard greensSept 1 – Dec 1Now
- Onion seedSept 1 – Nov 1Now
- ParsleySept 1 – Dec 31Now
- RadishesSept 1 – Dec 1Now
- TurnipsSept 1 – Nov 15Now
- Corn saladOct 1 – Dec 1Now
- Garden peasOct 1 – Dec 1Now
- Onion plants plantsOct 1 – Dec 31Now
- SpinachOct 1 – Dec 1Now
- Upland cressOct 1 – Dec 1Now
- Chervil and chivesNov 1 – Dec 31Soon
- Onion setsNov 1 – Dec 31Soon
- Spring planting calendar for an average last frost around March 30 Philadelphia: March 30
- Fall planting calendar for an average first frost around November 20 Philadelphia: November 17
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 Pennsylvania
- Yeadon 8 mi · last frost Apr 2
- Norristown 13 mi · last frost Apr 8
- Chester 17 mi · last frost Mar 30
- Lansdale 18 mi · last frost Apr 11
- Phoenixville 22 mi · last frost Apr 18
Updated