Dahlgren, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dahlgren, a community in King George County, Virginia.
Today
85°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 85. Northeast wind 5 to 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Dahlgren
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 to 8 mph NE | 23% |
| Tonight | 72°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 7 mph E | 62% |
| Wednesday | 87°F | Showers And Thunderstorms Likely | 2 to 7 mph SE | 68% |
| Wednesday Night | 75°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph S | 23% |
| Thursday | 91°F | Sunny | 6 to 12 mph SW | 9% |
| Thursday Night | 76°F | Mostly Clear | 6 to 10 mph SW | 9% |
| Friday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 10 mph SW | 21% |
| Friday Night | 74°F | Chance Showers And Thunderstorms | 5 to 9 mph SW | 36% |
| Saturday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 mph SW | 38% |
| Saturday Night | 73°F | Chance Showers And Thunderstorms | 6 mph SW | 38% |
| Sunday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph W | 22% |
| Sunday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 22% |
| Monday | 93°F | Sunny | 2 to 6 mph SW | 9% |
| Monday Night | 75°F | Partly Cloudy | 6 mph SW | 13% |
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 Aug 4, 2026.