Round Hill, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Round Hill, a town in Loudoun County, Virginia.
Today
77°F
Partly Sunny
Partly sunny, with a high near 77. East wind around 6 mph.
7-day forecast for Round Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Partly Sunny | 6 mph E | 9% |
| Tonight | 64°F | Mostly Cloudy | 6 to 13 mph SE | 12% |
| Sunday | 83°F | Chance Rain Showers | 7 to 14 mph S | 41% |
| Sunday Night | 61°F | Showers And Thunderstorms Likely | 5 to 14 mph NW | 71% |
| Monday | 68°F | Chance Rain Showers | 8 to 14 mph N | 43% |
| Monday Night | 57°F | Chance Rain Showers | 7 to 12 mph NE | 51% |
| Tuesday | 62°F | Rain Showers Likely | 13 mph NE | 68% |
| Tuesday Night | 52°F | Rain Showers Likely | 12 to 16 mph NE | 68% |
| Wednesday | 59°F | Rain Showers Likely | 13 to 16 mph NE | 56% |
| Wednesday Night | 52°F | Chance Showers And Thunderstorms | 12 to 15 mph NE | 49% |
| Thursday | 61°F | Chance Showers And Thunderstorms | 12 to 15 mph NE | 42% |
| Thursday Night | 51°F | Chance Showers And Thunderstorms | 8 to 12 mph N | 40% |
| Friday | 66°F | Slight Chance Rain Showers | 14 mph N | 22% |
| Friday Night | 51°F | Slight Chance Rain Showers | 7 to 13 mph N | 16% |
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 Sep 19, 2026.