Weather in Great Falls, VA
Updated 2026-08-11 11:15 local time · ZIP codes 22066
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
84°5% rain87°4% rain89°3% rain92°3% rain93°3% rain
89°5% rain
92°7% rain90°2% rain87°2% rain82°3% rain
80°4% rain78°5% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 7%).
It feels like 91°F with winds near 6 mph.
82°F, 3% rain chance and 3 mph wind.
Visibility is around 6 mi; gusts may reach 26 mph.
Current temperature is 84°F, wind 6 mph, rain chance up to 7%.
UV index is 5. Sunscreen and sunglasses are sensible for longer outdoor time.
Great Falls weather today
Sunny and 84°F in Great Falls, VA. Today's high is 93°F with a 57% rain chance. Winds are around 6 mph with gusts near 7 mph. Relative humidity is 68%, pressure is 29.96 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Great Falls
Sunrise is at 06:19 AM and sunset is at 08:09 PM. Tomorrow's forecast calls for Sunny with a high near 90°F and a low near 69°F. The maximum rain chance is 5%.