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 3.1° 6.2°
Average change in low temperature day-to-day 4.6° 7.7°
Precipitation Last Month Last Year
Chance of dry day after a precip day 80% 63%
Chance of precip day after a dry day 19% 33%

Weather forecast accuracy for Herndon, Virginia

Last Month
The Weather Channel   84.68%
Weather Underground   84.14%
Foreca   83.06%
MeteoGroup   80.65%
AccuWeather   79.03%
Dark Sky (forecast.io)   72.04%
World Weather Online   65.86%
NWS Digital Forecast   64.78%
Persistence   58.87%
Last Year
AccuWeather   75.78%
The Weather Channel   75.34%
Weather Underground   74.95%
MeteoGroup   73.23%
NWS Digital Forecast   71.27%
Dark Sky (forecast.io)   70.42%
Foreca   70.40%
World Weather Online   62.25%
Persistence   43.98%

ForecastAdvisor Fact

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