Great Falls Crossing, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Great Falls Crossing, a community in Fairfax County, Virginia.
Today
76°F
Mostly Sunny
Mostly sunny, with a high near 76. South wind around 9 mph, with gusts as high as 18 mph.
7-day forecast for Great Falls Crossing
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Mostly Sunny | 9 mph S | 1% |
| Tonight | 62°F | Mostly Cloudy then Chance Rain Showers | 6 to 9 mph S | 43% |
| Thursday | 74°F | Chance Rain Showers | 10 mph S | 41% |
| Thursday Night | 61°F | Chance Rain Showers | 2 to 7 mph SW | 53% |
| Friday | 70°F | Chance Light Rain | 5 mph N | 52% |
| Friday Night | 50°F | Chance Light Rain then Partly Cloudy | 2 to 8 mph NW | 30% |
| Saturday | 62°F | Mostly Sunny | 8 to 14 mph NW | 6% |
| Saturday Night | 42°F | Mostly Clear | 8 to 12 mph NW | 5% |
| Sunday | 60°F | Mostly Sunny | 7 to 12 mph NW | 1% |
| Sunday Night | 41°F | Mostly Clear | 8 mph NW | 5% |
| Monday | 61°F | Sunny | 8 to 14 mph NW | 5% |
| Monday Night | 38°F | Mostly Clear | 2 to 8 mph W | 4% |
| Tuesday | 64°F | Sunny | 3 to 8 mph SW | 2% |
| Tuesday Night | 41°F | Mostly Clear | 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Great Falls Crossing (38.981, -77.324). Updated through the day.
Growing snapshot for Great Falls Crossing
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
198 days
Hardiness zone
7b
More local growing data for Great Falls Crossing: nearby ZIP 20194 weather · frost dates · planting calendar · Virginia frost dates
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Great Falls
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Climate data from the nearest NOAA station, Vienna, Va (6.7 mi from Great Falls Crossing). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.