Sully Square, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sully Square, a community in Fairfax County, Virginia.
This Afternoon
71°F
Mostly Sunny
Mostly sunny, with a high near 71. South wind around 8 mph.
7-day forecast for Sully Square
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Mostly Sunny | 8 mph S | 2% |
| Tonight | 51°F | Mostly Clear | 2 to 6 mph S | 2% |
| Wednesday | 75°F | Mostly Sunny | 2 to 10 mph S | 3% |
| Wednesday Night | 60°F | Mostly Cloudy then Chance Light Rain | 8 mph S | 37% |
| Thursday | 75°F | Chance Light Rain | 7 to 10 mph S | 53% |
| Thursday Night | 60°F | Light Rain Likely | 2 to 6 mph S | 67% |
| Friday | 71°F | Light Rain Likely | 6 mph SW | 72% |
| Friday Night | 51°F | Light Rain Likely | 5 mph N | 59% |
| Saturday | 68°F | Mostly Sunny | 7 mph NW | 12% |
| Saturday Night | 45°F | Partly Cloudy | 6 mph NW | 12% |
| Sunday | 64°F | Mostly Sunny | 6 mph NW | 10% |
| Sunday Night | 43°F | Chance Light Rain | 6 mph NW | 25% |
| Monday | 60°F | Chance Light Rain | 6 to 13 mph NW | 25% |
| Monday Night | 41°F | Slight Chance Light Rain | 9 mph NW | 22% |
Forecast source: National Weather Service (api.weather.gov) for Sully Square (38.922, -77.426). Updated through the day.
Growing snapshot for Sully Square
Last spring frost
Apr 15
First fall frost
Oct 24
Growing season
194 days
Hardiness zone
7b
More local growing data for Sully Square: nearby ZIP 20171 weather · frost dates · planting calendar · Virginia frost dates
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Climate data from the nearest NOAA station, Washington Dc Dulles Ap, Va (3.7 mi from Sully Square). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.