Round Hill, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Round Hill, a town in Loudoun County, Virginia.
Tonight
53°F
Mostly Clear
Mostly clear, with a low around 53. South wind around 8 mph.
7-day forecast for Round Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Mostly Clear | 8 mph S | 2% |
| Wednesday | 74°F | Mostly Sunny | 7 to 15 mph S | 2% |
| Wednesday Night | 62°F | Mostly Cloudy then Light Rain | 9 to 15 mph S | 78% |
| Thursday | 75°F | Light Rain Likely | 9 to 14 mph S | 64% |
| Thursday Night | 60°F | Chance Light Rain | 2 to 9 mph SW | 46% |
| Friday | 70°F | Chance Light Rain | 5 mph NW | 53% |
| Friday Night | 51°F | Chance Light Rain | 2 to 7 mph NW | 46% |
| Saturday | 64°F | Mostly Sunny | 7 to 14 mph NW | 10% |
| Saturday Night | 43°F | Partly Cloudy | 7 to 12 mph NW | 10% |
| Sunday | 61°F | Mostly Sunny | 7 to 10 mph W | 6% |
| Sunday Night | 42°F | Partly Cloudy then Slight Chance Light Rain | 6 to 12 mph NW | 19% |
| Monday | 61°F | Slight Chance Light Rain | 12 to 18 mph W | 21% |
| Monday Night | 41°F | Slight Chance Light Rain | 6 to 10 mph W | 21% |
| Tuesday | 64°F | Sunny | 9 to 15 mph W | 9% |
Forecast source: National Weather Service (api.weather.gov) for Round Hill (39.132, -77.767). Updated through the day.
Growing snapshot for Round Hill
Last spring frost
Apr 16
First fall frost
Oct 25
Growing season
189 days
Hardiness zone
7a
More local growing data for Round Hill: nearby ZIP 20141 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
South Riding
Sterling
Stone Ridge
Sugarland Run
University Center
Upperville
Waterford
Climate data from the nearest NOAA station, Purcellville, Va (4.6 mi from Round Hill). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.