Herndon, VA Weather Forecast
Fairfax County, Virginia
Live radar, warnings and storm tracking for Herndon, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Herndon
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Herndon, VA at a glance
Herndon is home to about 24,935 people in Fairfax County, across 4.3 square miles. It ranks 24th by population of 87 places in Virginia with a forecast here. The nearest neighbour with its own forecast is Vienna, 9 miles away.
- County
- Fairfax County
- Population
- 24,935 2023 est.
- Land area
- 4.3 sq mi
- People per sq mi
- 5,818
- Forecast point
- 38.9704°N, 77.3871°W
How well can the network see Herndon?
The nearest Doppler radar is KLWX (Sterling, VA), to the W. Its lowest scan passes about 240 ft above Herndon. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Herndon show up clearly. Herndon is closer to its radar than 99% of US cities.
The closest weather station is KIAD (Washington/Dulles Intl). Close enough that its readings are the conditions in town.
Forecasts near Herndon
- Vienna, VA9 mi
- Fairfax, VA9 mi
- Poolesville, MD12 mi
- Falls Church, VA13 mi
- Leesburg, VA13 mi
- Manassas Park, VA14 mi
- Rockville, MD15 mi
- Gaithersburg, MD16 mi
Elsewhere in Virginia
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