5-day weather forecast for Manassas, Virginia

Weather changeability for Herndon, Virginia

Temperature Last Month Last Year
Average change in high temperature day-to-day 3.2° 6.1°
Average change in low temperature day-to-day 4.8° 7.5°
Precipitation Last Month Last Year
Chance of dry day after a precip day 58% 56%
Chance of precip day after a dry day 37% 25%

Weather forecast accuracy for Herndon, Virginia

Last Month
AccuWeather   84.41%
Weather Underground   83.06%
The Weather Channel   81.99%
Foreca   80.28%
MeteoGroup   79.30%
Dark Sky (forecast.io)   76.61%
NWS Digital Forecast   74.97%
World Weather Online   52.42%
Persistence   42.47%
Last Year
MeteoGroup   75.10%
The Weather Channel   74.72%
Weather Underground   74.67%
Foreca   73.88%
AccuWeather   73.07%
Dark Sky (forecast.io)   72.01%
NWS Digital Forecast   67.01%
World Weather Online   61.88%
Persistence   44.51%

ForecastAdvisor Fact

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