5-day weather forecast for Clarksburg, Maryland
Weather changeability for Herndon, Virginia
Unfortunately, there was not enough data for this station to provide meaningful weather changeability data.
Weather forecast accuracy for Herndon, Virginia
|The Weather Channel||72.02%|
|National Weather Service||70.24%|
|NWS Digital Forecast||70.24%|
|World Weather Online||60.80%|
|The Weather Channel||73.40%|
|National Weather Service||70.64%|
|NWS Digital Forecast||69.03%|
58.0% of CustomWeather's low temperature forecasts for Herndon were within 3 degrees of actual temperatures last year.