Hamilton, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamilton, a town in Loudoun County, Virginia.
This Afternoon
83°F
Isolated Rain Showers
Isolated rain showers. Partly sunny, with a high near 83. North wind around 10 mph. Chance of precipitation is 20%.
7-day forecast for Hamilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 83°F | Isolated Rain Showers | 10 mph N | 20% |
| Tonight | 58°F | Isolated Rain Showers then Mostly Cloudy | 6 to 9 mph N | 20% |
| Saturday | 77°F | Partly Sunny | 8 mph E | 5% |
| Saturday Night | 65°F | Mostly Cloudy then Isolated Rain Showers | 8 mph SE | 20% |
| Sunday | 82°F | Rain Showers Likely | 8 to 13 mph S | 64% |
| Sunday Night | 64°F | Showers And Thunderstorms Likely | 3 to 8 mph NW | 67% |
| Monday | 72°F | Chance Rain Showers | 7 to 12 mph NE | 41% |
| Monday Night | 60°F | Rain Showers Likely | 7 to 10 mph NE | 61% |
| Tuesday | 64°F | Rain Showers Likely | 12 mph NE | 70% |
| Tuesday Night | 54°F | Rain Showers Likely | 10 to 14 mph NE | 70% |
| Wednesday | 60°F | Rain Showers Likely | 14 mph NE | 57% |
| Wednesday Night | 54°F | Showers And Thunderstorms Likely | 8 to 12 mph NE | 55% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 12 mph N | 54% |
| Thursday Night | 53°F | Chance Rain Showers | 5 to 9 mph N | 36% |
Forecast source: National Weather Service (api.weather.gov) for Hamilton (39.135, -77.664). Updated through the day.
Growing snapshot for Hamilton
Last spring frost
Apr 16
First fall frost
Oct 25
Growing season
189 days
Hardiness zone
7a
More local growing data for Hamilton: nearby ZIP 20158 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
Hillsboro
Kincora
Lansdowne
Leesburg
Loudoun Valley Estates
Lovettsville
Lowes Island
Middleburg
Moorefield
Oak Grove
One Loudoun
Purcellville
Round Hill
South Riding
Sterling
Stone Ridge
Sugarland Run
University Center
Upperville
Waterford
Climate data from the nearest NOAA station, Purcellville, Va (2.7 mi from Hamilton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.