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.
This Afternoon
71°F
Sunny
Sunny, with a high near 71. South wind around 8 mph.
7-day forecast for Potomac Mills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Sunny | 8 mph S | 2% |
| Tonight | 53°F | Mostly Clear | 6 mph S | 2% |
| Wednesday | 75°F | Patchy Fog then Mostly Sunny | 3 to 10 mph S | 2% |
| Wednesday Night | 63°F | Mostly Cloudy then Chance Light Rain | 8 mph S | 31% |
| Thursday | 76°F | Chance Light Rain | 10 mph S | 28% |
| Thursday Night | 63°F | Light Rain Likely | 3 to 7 mph S | 59% |
| Friday | 71°F | Light Rain Likely | 6 mph NW | 73% |
| Friday Night | 53°F | Light Rain Likely | 2 to 7 mph NW | 70% |
| Saturday | 66°F | Sunny | 10 mph NW | 10% |
| Saturday Night | 46°F | Partly Cloudy | 8 mph NW | 10% |
| Sunday | 63°F | Mostly Sunny | 3 to 8 mph W | 8% |
| Sunday Night | 44°F | Partly Cloudy then Slight Chance Light Rain | 6 mph NW | 16% |
| Monday | 63°F | Slight Chance Light Rain then Mostly Sunny | 6 to 12 mph NW | 16% |
| Monday Night | 42°F | Mostly Clear | 7 mph W | 8% |
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 Nov 3, 2026.