Greenbriar, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Greenbriar, a community in Fairfax County, Virginia.
Overnight
52°F
Mostly Clear
Mostly clear, with a low around 52. South wind around 5 mph.
7-day forecast for Greenbriar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Clear | 5 mph S | 2% |
| Wednesday | 75°F | Mostly Sunny | 5 to 10 mph S | 2% |
| Wednesday Night | 62°F | Mostly Cloudy then Chance Light Rain | 6 to 9 mph S | 46% |
| Thursday | 75°F | Chance Light Rain | 8 to 12 mph S | 38% |
| Thursday Night | 61°F | Chance Light Rain | 2 to 8 mph SW | 51% |
| Friday | 70°F | Rain Likely | 5 mph N | 64% |
| Friday Night | 51°F | Light Rain Likely | 2 to 7 mph NW | 64% |
| Saturday | 64°F | Mostly Sunny | 8 to 12 mph NW | 11% |
| Saturday Night | 43°F | Partly Cloudy | 8 mph NW | 11% |
| Sunday | 61°F | Mostly Sunny | 5 to 8 mph NW | 5% |
| Sunday Night | 42°F | Partly Cloudy then Slight Chance Light Rain | 5 to 8 mph NW | 19% |
| Monday | 61°F | Slight Chance Light Rain | 8 to 14 mph NW | 21% |
| Monday Night | 40°F | Slight Chance Light Rain | 5 to 8 mph W | 21% |
| Tuesday | 64°F | Sunny | 7 to 12 mph W | 10% |
Forecast source: National Weather Service (api.weather.gov) for Greenbriar (38.872, -77.399). Updated through the day.
Growing snapshot for Greenbriar
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
198 days
Hardiness zone
7b
More local growing data for Greenbriar: nearby ZIP 22033 weather · frost dates · planting calendar · Virginia frost dates
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Climate data from the nearest NOAA station, Vienna, Va (5.3 mi from Greenbriar). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.