Great Falls, VA Weather & Growing Conditions
Tonight
52°F
Mostly Clear
Mostly clear, with a low around 52. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Clear | 5 mph S | 2% |
| Wednesday | 74°F | Mostly Sunny | 3 to 10 mph S | 2% |
| Wednesday Night | 62°F | Mostly Cloudy then Chance Light Rain | 8 mph S | 47% |
| Thursday | 75°F | Chance Light Rain | 10 mph S | 44% |
| Thursday Night | 61°F | Chance Light Rain | 2 to 7 mph SW | 50% |
| Friday | 70°F | Rain Likely | 5 mph NW | 62% |
| Friday Night | 50°F | Light Rain Likely | 2 to 7 mph NW | 62% |
| Saturday | 64°F | Mostly Sunny | 7 to 12 mph NW | 11% |
| Saturday Night | 43°F | Partly Cloudy | 8 mph NW | 11% |
| Sunday | 61°F | Mostly Sunny | 8 mph NW | 7% |
| Sunday Night | 42°F | Partly Cloudy then Slight Chance Light Rain | 5 to 8 mph NW | 20% |
| Monday | 61°F | Slight Chance Light Rain | 8 to 14 mph NW | 20% |
| Monday Night | 39°F | Slight Chance Light Rain | 5 to 8 mph W | 20% |
| Tuesday | 64°F | Sunny | 6 to 12 mph W | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Great Falls, VA
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
198 days
Hardiness zone
7b
Explore more for Great Falls, VA: full frost dates · planting calendar · Virginia frost dates
Climate data from the nearest NOAA station, Vienna, Va (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.