Weather in Herndon, VA
Updated 2026-08-11 12:00 local time · ZIP codes 20170, 20171
Cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
79°5% rain
89°4% rain91°3% rain93°3% rain
90°4% rain
93°10% rain90°2% rain87°2% rain82°3% rain
79°5% rain77°5% rain76°7% 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 10%).
It feels like 82°F with winds near 6 mph.
79°F, 5% rain chance and 6 mph wind.
Visibility is around 10 mi; gusts may reach 32 mph.
Current temperature is 79°F, wind 6 mph, rain chance up to 10%.
UV index is 7. Sunscreen, shade and protective clothing are recommended.
Herndon weather today
Cloudy and 79°F in Herndon, VA. Today's high is 93°F with a 38% rain chance. Winds are around 6 mph with gusts near 7 mph. Relative humidity is 70%, pressure is 29.97 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Herndon
Sunrise is at 06:19 AM and sunset is at 08:10 PM. Tomorrow's forecast calls for Sunny with a high near 90°F and a low near 68°F. The maximum rain chance is 36%.