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
79°F
Partly Sunny
Partly sunny, with a high near 79. East wind around 6 mph.
7-day forecast for Great Falls Crossing
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Partly Sunny | 6 mph E | 7% |
| Tonight | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 8 mph SE | 15% |
| Sunday | 84°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 8 to 12 mph S | 40% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely | 3 to 12 mph NW | 70% |
| Monday | 71°F | Chance Rain Showers | 8 to 12 mph N | 36% |
| Monday Night | 57°F | Chance Rain Showers | 6 to 9 mph NE | 45% |
| Tuesday | 64°F | Rain Showers Likely | 13 mph NE | 62% |
| Tuesday Night | 54°F | Rain Showers Likely | 13 mph NE | 62% |
| Wednesday | 61°F | Chance Rain Showers | 13 mph NE | 51% |
| Wednesday Night | 54°F | Chance Rain Showers | 13 mph NE | 45% |
| Thursday | 62°F | Chance Rain Showers | 13 mph NE | 45% |
| Thursday Night | 52°F | Chance Showers And Thunderstorms | 7 to 10 mph N | 39% |
| Friday | 67°F | Slight Chance Rain Showers | 10 mph N | 19% |
| Friday Night | 52°F | Slight Chance Rain Showers | 6 to 10 mph N | 15% |
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
Nearby towns & communities
Annandale
Bailey's Crossroads
Belle Haven
Braddock
Bull Run
Burke
Burke Centre
Centreville
Chantilly
Clifton
Crosspointe
Difficult Run
Dranesville
Dunn Loring
Fair Lakes
Fair Oaks
Fairfax
Fairfax Station
Floris
Fort Belvoir
Fort Hunt
Franconia
Franklin Farm
George Mason
Great Falls
Greenbriar
Groveton
Hayfield
Herndon
Huntington
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 Sep 19, 2026.