5-day weather forecast for Manassas, Virginia
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||84.23%|
|Dark Sky (forecast.io)||82.21%|
|NWS Digital Forecast||75.00%|
|World Weather Online||69.75%|
|The Weather Channel||75.34%|
|NWS Digital Forecast||71.27%|
|Dark Sky (forecast.io)||70.42%|
|World Weather Online||62.25%|
11.5% of Dark Sky (forecast.io)'s high temperature forecasts for Herndon were exactly right last year.