Last frost date in Washington, District of Columbia
March 29
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 11.
November 8
Average first frost in fall. 1 year in 10 it comes by October 26.
Source: NOAA U.S. Climate Normals 1991–2020, station Natl Arboretum Dc (USC00186350), 2.6 miles from Washington, elevation 50 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 29 | Apr 11 |
| First frost in fall | Oct 26 | Nov 8 | Nov 23 |
Frost-free days in an average year: 224
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 10 | Oct 29 |
| Frost (32°F) | Every year | Mar 29 | Nov 8 |
| Hard freeze (28°F) | Every year | Mar 17 | Nov 20 |
Nights at 32°F or colder in an average year: 84
What to plant now in Washington
- Mustard greensAug 15 – Nov 1Now
- Garden peasSept 1 – Nov 1Now
- ParsleySept 1 – Nov 15Now
- RadishesSept 1 – Nov 15Now
- SpinachSept 15 – Nov 1Now
- Corn saladOct 1 – Dec 1Now
- Onion setsOct 1 – Dec 1Now
- Upland cressOct 1 – Dec 1Now
- Asparagus plantsDec 1 – Jan 1Soon
- Spring planting calendar for an average last frost around March 30 Washington: March 29
- Fall planting calendar for an average first frost around November 10 Washington: November 8
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 District of Columbia
Updated