NimbocastGreat Falls, VA Weather
Live radar, hourly and 7-day forecast, and National Weather Service alerts for Great Falls, Fairfax County, Virginia.
Updated Jul 29, 2026, 5:05 PM local time · Radar refreshes every 5 minutes
⛅
Great Falls
81°F
Wind 14 mph
Humidity 47%
Cloud cover 51%
UV index 7
Alerts 0
Active alerts
✓
No active National Weather Service alerts for Great Falls, VA.
Great Falls weather radar
Light
Heavy
Next 24 hours
Now
⛅
81°F
6 PM
🌤️
81°F
7 PM
🌤️
80°F
1%
8 PM
☁️
78°F
3%
9 PM
☁️
75°F
1%
10 PM
⛅
73°F
2%
11 PM
☁️
74°F
1%
12 AM
☁️
74°F
1%
1 AM
☀️
72°F
2 AM
☀️
70°F
3 AM
☀️
69°F
4 AM
☀️
68°F
5 AM
☀️
67°F
6 AM
☀️
66°F
7 AM
☀️
67°F
8 AM
☀️
70°F
9 AM
☀️
73°F
10 AM
☀️
75°F
11 AM
☀️
78°F
12 PM
☀️
80°F
1 PM
🌤️
82°F
2 PM
⛅
83°F
3 PM
🌤️
83°F
1%
4 PM
⛅
83°F
1%
7-day forecast
Today
Jul 29
☁️
83°F
69°F
5%
Thu
Jul 30
☁️
84°F
66°F
2%
Fri
Jul 31
☁️
88°F
66°F
Sat
Aug 1
☁️
93°F
69°F
11%
Sun
Aug 2
🌦️
84°F
74°F
44%
Mon
Aug 3
🌦️
78°F
70°F
44%
Tue
Aug 4
☁️
78°F
67°F
22%
Weather near Great Falls
3 mi
Reston, VA4 mi
Potomac, MD4 mi
Wolf Trap, VA6 mi
Herndon, VA6 mi
North Potomac, MD6 mi
Tysons, VA7 mi
McLean, VA7 mi
Vienna, VA
Alerts are relayed from the National Weather Service and may lag
the official source. In a life-threatening situation always follow
weather.gov and local emergency
broadcasts.