Last frost date in Herndon, Virginia
April 15
Average last frost in spring. In an early year (1 in 10) it's over by March 31; in a late year (1 in 10) it comes after April 30.
October 24
Average first frost in fall. 1 year in 10 it comes by October 10.
Source: NOAA U.S. Climate Normals 1991–2020, station Washington Dc Dulles AP (USW00093738), 4.6 miles from Herndon, elevation 290 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 31 | Apr 15 | Apr 30 |
| First frost in fall | Oct 10 | Oct 24 | Nov 5 |
Frost-free days in an average year: 194
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 29 | Oct 14 |
| Frost (32°F) | Every year | Apr 15 | Oct 24 |
| Hard freeze (28°F) | Every year | Apr 1 | Nov 4 |
Nights at 32°F or colder in an average year: 102
What to plant now in Herndon
- Spring planting calendar for an average last frost around April 10 Herndon: April 15
- Fall planting calendar for an average first frost around October 20 Herndon: October 24
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 Virginia
- Fairfax 9 mi · last frost Apr 14
- Falls Church 13 mi · last frost Apr 9
- Leesburg 13 mi · last frost Apr 16
- Manassas 16 mi · last frost Apr 12
- Alexandria 19 mi · last frost Mar 24
Updated