Hamilton, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamilton, a town in Loudoun County, Virginia.
This Afternoon
75°F
Partly Sunny
Partly sunny, with a high near 75. South wind 10 to 14 mph, with gusts as high as 22 mph.
7-day forecast for Hamilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Partly Sunny | 10 to 14 mph S | 1% |
| Tonight | 63°F | Mostly Cloudy then Light Rain | 8 to 15 mph S | 75% |
| Thursday | 75°F | Chance Light Rain then Mostly Cloudy | 10 to 15 mph S | 42% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Light Rain | 1 to 9 mph SW | 16% |
| Friday | 69°F | Slight Chance Light Rain | 5 mph N | 16% |
| Friday Night | 47°F | Partly Cloudy | 2 to 13 mph NW | 11% |
| Saturday | 60°F | Mostly Sunny | 13 to 18 mph NW | 7% |
| Saturday Night | 41°F | Partly Cloudy | 13 to 17 mph NW | 3% |
| Sunday | 61°F | Mostly Sunny | 9 to 18 mph NW | 3% |
| Sunday Night | 39°F | Mostly Clear | 8 to 14 mph W | 0% |
| Monday | 62°F | Sunny | 9 to 17 mph W | 0% |
| Monday Night | 38°F | Mostly Clear | 2 to 7 mph W | 0% |
| Tuesday | 67°F | Sunny | 3 to 10 mph W | 0% |
| Tuesday Night | 40°F | Mostly Clear | 3 to 7 mph W | 1% |
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 Nov 4, 2026.