Updated 2026-09-26 12:45 local time · ZIP codes 20170, 20171
Cloudy
* WHAT...North winds 10 to 20 kt with gusts up to 30 kt. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, and Patapsco River including Baltimore Harbor. * WHEN...Until 6 AM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
* WHAT...North winds 10 to 20 kt with gusts up to 30 kt. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, and Patapsco River including Baltimore Harbor. * WHEN...Until 6 AM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
72°8% rain
72°10% rain73°10% rain71°7% rain69°11% rain
63°23% rain
60°30% rain59°27% rain
60°24% rain61°20% rain63°15% rain62°15% rain
There is a moderate rain chance, peaking near 30%.
It feels like 62°F with winds near 16 mph.
71°F, 7% rain chance and 15 mph wind.
Visibility is around 6 mi; gusts may reach 26 mph.
Current temperature is 72°F, wind 16 mph, rain chance up to 30%.
UV index is 1.
Virginia ranges from Atlantic coastal plain to Appalachian highlands. Summers are generally warm and humid, while mountain areas are cooler and winter conditions vary substantially statewide.
Herndon is part of the South weather region. The forecast point is near 38.97°N latitude and 77.39°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Cloudy and 72°F in Herndon, VA. Today's high is 73°F with a 19% rain chance. Winds are around 16 mph with gusts near 26 mph. Relative humidity is 40%, pressure is 29.93 inHg, and visibility is about 6 miles.
Sunrise is at 07:01 AM and sunset is at 07:00 PM. Tomorrow's forecast calls for Overcast with a high near 72°F and a low near 57°F. The maximum rain chance is 57%.
