Dumfries, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dumfries, a town in Prince William County, Virginia.
Tonight
69°F
Mostly Cloudy
Mostly cloudy, with a low around 69. Southeast wind around 8 mph.
7-day forecast for Dumfries
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Mostly Cloudy | 8 mph SE | 10% |
| Sunday | 87°F | Chance Rain Showers | 7 to 12 mph S | 25% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 2 to 7 mph W | 44% |
| Monday | 76°F | Chance Rain Showers | 7 to 10 mph NE | 36% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 9 mph NE | 47% |
| Tuesday | 71°F | Showers And Thunderstorms Likely | 7 to 13 mph NE | 55% |
| Tuesday Night | 59°F | Showers And Thunderstorms Likely | 12 mph NE | 55% |
| Wednesday | 67°F | Chance Rain Showers | 12 to 15 mph NE | 48% |
| Wednesday Night | 58°F | Chance Rain Showers | 9 to 15 mph NE | 39% |
| Thursday | 68°F | Chance Rain Showers | 13 mph NE | 37% |
| Thursday Night | 55°F | Chance Rain Showers | 7 to 12 mph N | 26% |
| Friday | 70°F | Slight Chance Rain Showers | 13 mph N | 24% |
| Friday Night | 54°F | Slight Chance Rain Showers | 6 to 10 mph N | 18% |
| Saturday | 72°F | Slight Chance Rain Showers | 12 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov) for Dumfries (38.567, -77.322). Updated through the day.
Growing snapshot for Dumfries
Last spring frost
Mar 28
First fall frost
Nov 8
Growing season
226 days
Hardiness zone
7b
More local growing data for Dumfries: nearby ZIP 22026 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Buckhall
Bull Run
Bull Run Mountain Estates
Cherry Hill
County Center
Dale City
Gainesville
Haymarket
Independent Hill
Innovation
Lake Ridge
Laurel Hill
Leesylvania
Linton Hall
Manassas Park
Montclair
Nokesville
Occoquan
Potomac Mills
Quantico
Quantico Base
Sudley
Triangle
Woodbridge
Climate data from the nearest NOAA station, Quantico Mcas, Va (4.2 mi from Dumfries). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.