Last frost date in Washington, Pennsylvania
April 24
Average last frost in spring. In an early year (1 in 10) it's over by April 8; in a late year (1 in 10) it comes after May 18.
October 23
Average first frost in fall. 1 year in 10 it comes by October 8.
Source: NOAA U.S. Climate Normals 1991–2020, station Washington 3 NE (USC00369318), 3.1 miles from Washington, elevation 1,300 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 8 | Apr 24 | May 18 |
| First frost in fall | Oct 8 | Oct 23 | Nov 5 |
Frost-free days in an average year: 181
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 6 | Oct 11 |
| Frost (32°F) | Every year | Apr 24 | Oct 23 |
| Hard freeze (28°F) | Every year | Apr 11 | Nov 2 |
Nights at 32°F or colder in an average year: 122
What to plant now in Washington
- Spring planting calendar for an average last frost around April 20 Washington: April 24
- Fall planting calendar for an average first frost around October 20 Washington: 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
- Pittsburgh 23 mi · last frost Apr 18
- McKeesport 24 mi · last frost May 2
- Wilkinsburg 27 mi · last frost Apr 5
- Franklin Park 30 mi · last frost Apr 24
- Monroeville 31 mi · last frost Apr 22
Updated