Last frost date in Pittsburgh, Pennsylvania
April 18
Average last frost in spring. In an early year (1 in 10) it's over by April 2; in a late year (1 in 10) it comes after May 6.
October 28
Average first frost in fall. 1 year in 10 it comes by October 14.
Source: NOAA U.S. Climate Normals 1991–2020, station Pittsburgh Allegheny Co AP (USW00014762), 6.5 miles from Pittsburgh, elevation 1,248 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Baldwin, Bethel Park, Jefferson Hills, West Mifflin and Whitehall, so their frost dates are the same as Pittsburgh's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 2 | Apr 18 | May 6 |
| First frost in fall | Oct 14 | Oct 28 | Nov 10 |
Frost-free days in an average year: 193
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 29 | Oct 17 |
| Frost (32°F) | Every year | Apr 18 | Oct 28 |
| Hard freeze (28°F) | Every year | Apr 5 | Nov 8 |
Nights at 32°F or colder in an average year: 106
What to plant now in Pittsburgh
- 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 Pittsburgh: April 18
- Fall planting calendar for an average first frost around October 30 Pittsburgh: October 28
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
- Wilkinsburg 5 mi · last frost Apr 5
- McKeesport 10 mi · last frost May 2
- Monroeville 11 mi · last frost Apr 22
- Franklin Park 12 mi · last frost Apr 24
- Plum 13 mi · last frost Apr 16