Last frost date in New Castle, Pennsylvania
April 30
Average last frost in spring. In an early year (1 in 10) it's over by April 17; in a late year (1 in 10) it comes after May 19.
October 23
Average first frost in fall. 1 year in 10 it comes by October 6.
Source: NOAA U.S. Climate Normals 1991–2020, station New Castle 1 N (USC00366233), 1.7 miles from New Castle, elevation 825 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 17 | Apr 30 | May 19 |
| First frost in fall | Oct 6 | Oct 23 | Nov 4 |
Frost-free days in an average year: 175
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 11 | Oct 9 |
| Frost (32°F) | Every year | Apr 30 | Oct 23 |
| Hard freeze (28°F) | Every year | Apr 20 | Nov 2 |
Nights at 32°F or colder in an average year: 134
What to plant now in New Castle
- Spring planting calendar for an average last frost around April 30 New Castle: April 30
- Fall planting calendar for an average first frost around October 20 New Castle: October 23
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
- Hermitage 17 mi · last frost May 15
- Sharon 18 mi · last frost May 1
- Butler 25 mi · last frost May 7
- Franklin Park 31 mi · last frost Apr 24
- New Kensington 43 mi · last frost Apr 16