Potomac Mills, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Potomac Mills, a community in Prince William County, Virginia.
Today
80°F
Partly Sunny
Partly sunny, with a high near 80. Northeast wind around 7 mph.
7-day forecast for Potomac Mills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Partly Sunny | 7 mph NE | 5% |
| Tonight | 67°F | Mostly Cloudy | 6 mph SE | 13% |
| Sunday | 86°F | Mostly Cloudy then Chance Rain Showers | 6 to 12 mph S | 33% |
| Sunday Night | 65°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 10 mph NW | 66% |
| Monday | 73°F | Chance Rain Showers | 8 to 12 mph NE | 39% |
| Monday Night | 61°F | Chance Rain Showers | 8 mph NE | 43% |
| Tuesday | 67°F | Rain Showers Likely | 9 to 15 mph NE | 58% |
| Tuesday Night | 57°F | Rain Showers Likely | 10 to 15 mph NE | 58% |
| Wednesday | 63°F | Chance Rain Showers | 15 mph NE | 51% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 49% |
| Thursday | 64°F | Chance Showers And Thunderstorms | 12 to 15 mph NE | 43% |
| Thursday Night | 54°F | Chance Showers And Thunderstorms | 7 to 14 mph N | 39% |
| Friday | 69°F | Slight Chance Rain Showers | 12 mph N | 19% |
| Friday Night | 54°F | Slight Chance Rain Showers | 6 to 9 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov) for Potomac Mills (38.657, -77.299). Updated through the day.
Growing snapshot for Potomac Mills
Last spring frost
Apr 12
First fall frost
Oct 27
Growing season
197 days
Hardiness zone
7b
More local growing data for Potomac Mills: nearby ZIP 22192 weather · frost dates · planting calendar · Virginia frost dates
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Climate data from the nearest NOAA station, Manassas, Va (10 mi from Potomac Mills). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.