Dahlgren, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dahlgren, a community in King George County, Virginia.
Tonight
54°F
Mostly Clear
Mostly clear, with a low around 54. South wind around 5 mph.
7-day forecast for Dahlgren
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Mostly Clear | 5 mph S | 2% |
| Wednesday | 75°F | Patchy Fog then Mostly Sunny | 2 to 8 mph S | 2% |
| Wednesday Night | 64°F | Mostly Cloudy | 7 mph S | 9% |
| Thursday | 76°F | Slight Chance Light Rain | 6 to 10 mph S | 18% |
| Thursday Night | 65°F | Light Rain Likely | 5 mph S | 72% |
| Friday | 71°F | Rain | 6 mph N | 82% |
| Friday Night | 54°F | Light Rain Likely | 5 mph N | 72% |
| Saturday | 66°F | Mostly Sunny | 6 to 9 mph NW | 11% |
| Saturday Night | 46°F | Mostly Clear | 6 mph NW | 11% |
| Sunday | 62°F | Mostly Sunny | 7 mph NW | 5% |
| Sunday Night | 45°F | Partly Cloudy then Slight Chance Light Rain | 5 mph W | 16% |
| Monday | 62°F | Slight Chance Light Rain | 5 to 13 mph W | 20% |
| Monday Night | 44°F | Slight Chance Light Rain then Mostly Clear | 6 mph W | 20% |
| Tuesday | 65°F | Sunny | 6 to 10 mph SW | 10% |
Forecast source: National Weather Service (api.weather.gov) for Dahlgren (38.342, -77.064). Updated through the day.
Growing snapshot for Dahlgren
Last spring frost
Mar 28
First fall frost
Nov 8
Growing season
226 days
Hardiness zone
7b
More local growing data for Dahlgren: nearby ZIP 22448 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Quantico Mcas, Va (18.5 mi from Dahlgren). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.