South Riding, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Riding, a community in Loudoun County, Virginia.
Tonight
67°F
Mostly Cloudy
Mostly cloudy, with a low around 67. Southeast wind around 8 mph.
7-day forecast for South Riding
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 67°F | Mostly Cloudy | 8 mph SE | 7% |
| Sunday | 84°F | Chance Rain Showers | 8 to 12 mph S | 53% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 8 mph W | 56% |
| Monday | 73°F | Chance Rain Showers | 10 mph NE | 32% |
| Monday Night | 60°F | Chance Rain Showers | 6 to 9 mph NE | 50% |
| Tuesday | 67°F | Rain Showers Likely | 8 to 12 mph NE | 64% |
| Tuesday Night | 55°F | Showers And Thunderstorms Likely | 12 mph NE | 64% |
| Wednesday | 63°F | Chance Rain Showers | 13 mph NE | 52% |
| Wednesday Night | 55°F | Chance Rain Showers | 12 mph NE | 37% |
| Thursday | 63°F | Chance Rain Showers | 13 mph NE | 29% |
| Thursday Night | 52°F | Chance Rain Showers | 8 to 12 mph N | 26% |
| Friday | 67°F | Slight Chance Rain Showers | 14 mph N | 24% |
| Friday Night | 52°F | Slight Chance Rain Showers | 9 to 14 mph N | 23% |
| Saturday | 70°F | Slight Chance Rain Showers | 12 to 15 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov) for South Riding (38.912, -77.513). Updated through the day.
Growing snapshot for South Riding
Last spring frost
Apr 15
First fall frost
Oct 24
Growing season
194 days
Hardiness zone
7a
More local growing data for South Riding: nearby ZIP 20152 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Aldie
Arcola
Ashburn
Belmont
Brambleton
Broadlands
Cascades
Countryside
Dulles Town Center
Goose Creek Village
Hamilton
Hillsboro
Kincora
Lansdowne
Leesburg
Loudoun Valley Estates
Lovettsville
Lowes Island
Middleburg
Moorefield
Oak Grove
One Loudoun
Purcellville
Round Hill
Sterling
Stone Ridge
Sugarland Run
University Center
Upperville
Waterford
Climate data from the nearest NOAA station, Washington Dc Dulles Ap, Va (4.1 mi from South Riding). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.