Herndon

Weather in Herndon, live

The weather over Herndon as it is measured right now, from radar and the airport reports at Washington/Dulles Intl and Leesburg Exec, beside the forecast model’s temperature and wind. Each layer says which it is.

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Right now · as of

  • KIAD Washington/Dulles Intl, 7 km: 17 °C (63 °F), wind from 010° at 12 kt, gusting 17 kt, visibility 10+ miles · VFR · 29 minutes ago
  • KJYO Leesburg Exec, 20 km: 17 °C (63 °F), wind from 010° at 9 kt, visibility 10+ miles · VFR · 6 minutes ago
  • KGAI Gaithersburg/Montgomery Cnty, 29 km: 17 °C (63 °F), wind variable at 3 kt, visibility 10+ miles · VFR · 25 minutes ago
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What the map shows over Herndon

  • Rain radarMeasuredHerndon is inside RainViewer’s radar coverage. Frames every 10 minutes for the last 2 hours.Open on the mapAbout this layer
  • LightningMeasuredHerndon is inside the area NOAA’s lightning layer covers, the Americas and the Pacific. Strike density every 15 minutes.Open on the mapAbout this layer
  • Temperature mapForecast modelNOAA’s GFS model on a 0.25° grid, points about 25 km apart: the forecast for now, not a thermometer reading.Open on the mapAbout this layer
  • Wind mapForecast modelWind 10 metres up from the same model, so it smooths over streets and hills.Open on the mapAbout this layer
  • Severe weather alertsOfficial warningsActive alerts from the US National Weather Service, each pinned as one point.Open on the mapAbout this layer
  • Airport weather (METAR)MeasuredThe latest reports from Washington/Dulles Intl (KIAD), 7 km away, Leesburg Exec (KJYO), 20 km away, Gaithersburg/Montgomery Cnty (KGAI), 29 km away and Manassas Rgnl (KHEF), 30 km away, usually every hour.Open on the mapAbout this layer

Good to know

  • Radar, lightning and airport reports are measurements. Temperature and wind are a forecast model’s values for the nearest hour, which can differ from what a thermometer in Herndon reads.
  • Radar detail stops at about zoom 7 and lightning at zoom 8, so the weather of a single street isn’t resolved.
  • For a picture of conditions, not for safety decisions: follow the warnings of your local weather service.

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