South Run, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Run, a community in Fairfax County, Virginia.
Today
86°F
Partly Sunny
Partly sunny, with a high near 86. Northeast wind around 7 mph.
7-day forecast for South Run
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Partly Sunny | 7 mph NE | 8% |
| Tonight | 70°F | Showers And Thunderstorms Likely | 2 to 7 mph E | 69% |
| Wednesday | 86°F | Showers And Thunderstorms Likely | 3 to 7 mph SE | 67% |
| Wednesday Night | 72°F | Chance Showers And Thunderstorms | 7 mph S | 54% |
| Thursday | 90°F | Mostly Sunny | 7 to 12 mph S | 12% |
| Thursday Night | 73°F | Partly Cloudy | 6 to 10 mph SW | 13% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 8 mph SW | 36% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 44% |
| Saturday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph SW | 50% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 5 mph SW | 50% |
| Sunday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph W | 20% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 20% |
| Monday | 92°F | Mostly Sunny | 2 to 6 mph W | 10% |
| Monday Night | 73°F | Partly Cloudy | 6 mph W | 14% |
Forecast source: National Weather Service (api.weather.gov) for South Run (38.748, -77.273). Updated through the day.
Growing snapshot for South Run
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
198 days
Hardiness zone
7b
More local growing data for South Run: nearby ZIP 22153 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Annandale
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Braddock
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Burke Centre
Centreville
Chantilly
Clifton
Crosspointe
Difficult Run
Dranesville
Dunn Loring
Fair Lakes
Fair Oaks
Fairfax
Fairfax Station
Floris
Fort Belvoir
Fort Hunt
Franconia
Franklin Farm
George Mason
Great Falls
Great Falls Crossing
Greenbriar
Groveton
Hayfield
Herndon
Climate data from the nearest NOAA station, Vienna, Va (10.6 mi from South Run). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.