5-day weather forecast for Garrisonville, Virginia

Weather changeability for Herndon, Virginia

Temperature Last Month Last Year
Average change in high temperature day-to-day 5.7° 6.5°
Average change in low temperature day-to-day 7.3° 8.1°
Precipitation Last Month Last Year
Chance of dry day after a precip day 88% 55%
Chance of precip day after a dry day 26% 29%

Weather forecast accuracy for Herndon, Virginia

Last Month
MeteoGroup   79.84%
The Weather Channel   78.76%
Weather Underground   77.41%
AccuWeather   77.15%
NWS Digital Forecast   72.50%
Dark Sky (forecast.io)   72.04%
Foreca   69.62%
Persistence   44.89%
Last Year
MeteoGroup   73.65%
Weather Underground   73.48%
The Weather Channel   73.30%
AccuWeather   71.69%
Foreca   71.26%
WeatherBug   70.41%
NWS Digital Forecast   70.03%
CustomWeather   68.27%
Persistence   41.15%

ForecastAdvisor Fact

ForecastWatch.com is the largest provider of weather forecast accuracy statistics.