Dumfries, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dumfries, a town in Prince William County, Virginia.
Today
88°F
Partly Sunny then Slight Chance Rain Showers
A slight chance of rain showers after 5pm. Partly sunny, with a high near 88. Northeast wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Dumfries
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Partly Sunny then Slight Chance Rain Showers | 7 mph NE | 16% |
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 6 mph E | 74% |
| Wednesday | 88°F | Showers And Thunderstorms Likely | 1 to 6 mph SE | 68% |
| Wednesday Night | 73°F | Chance Showers And Thunderstorms | 6 mph S | 40% |
| Thursday | 92°F | Mostly Sunny | 6 to 10 mph S | 9% |
| Thursday Night | 74°F | Partly Cloudy | 5 to 9 mph SW | 9% |
| Friday | 93°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 8 mph SW | 30% |
| Friday Night | 73°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 38% |
| Saturday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 mph SW | 47% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 47% |
| Sunday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph W | 19% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 19% |
| Monday | 94°F | Mostly Sunny | 1 to 5 mph W | 7% |
| Monday Night | 74°F | Partly Cloudy | 5 mph W | 13% |
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
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Bull Run Mountain Estates
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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 Aug 4, 2026.