Thursday
Mostly sunny
High:
91°F
A slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 102. Southwest wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Herndon, VA Weather - Tomorrow’s Forecast
Thursday Night
Chance of thunderstorms
Overnight low:
72°F
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.