Harman US

Mount Vernon, VA Weather & Growing Conditions

Tonight
53°F
Mostly Clear
Mostly clear, with a low around 53. South wind around 3 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 53°F Mostly Clear 3 mph S 2%
Wednesday 76°F Patchy Fog then Mostly Sunny 2 to 9 mph S 2%
Wednesday Night 63°F Mostly Cloudy then Chance Light Rain 7 mph S 27%
Thursday 76°F Chance Light Rain 7 to 10 mph S 28%
Thursday Night 63°F Light Rain Likely 2 to 6 mph S 60%
Friday 72°F Rain Likely 5 mph NW 74%
Friday Night 53°F Light Rain Likely 2 to 6 mph NW 72%
Saturday 67°F Mostly Sunny 6 to 10 mph NW 13%
Saturday Night 45°F Partly Cloudy 7 mph NW 13%
Sunday 63°F Mostly Sunny 7 mph W 5%
Sunday Night 44°F Partly Cloudy then Slight Chance Light Rain 6 mph NW 18%
Monday 63°F Slight Chance Light Rain 6 to 14 mph NW 21%
Monday Night 42°F Slight Chance Light Rain 5 to 8 mph W 21%
Tuesday 66°F Sunny 6 to 12 mph W 12%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Mount Vernon, VA

Last spring frost
Apr 3
First fall frost
Nov 8
Growing season
217 days
Hardiness zone
7b

Explore more for Mount Vernon, VA: full frost dates · planting calendar · Virginia frost dates

Climate data from the nearest NOAA station, Oxon Hill, Md (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.