5-day weather forecast for Brandy Station, Virginia

Weather changeability for Herndon, Virginia

Temperature Last Month Last Year
Average change in high temperature day-to-day 5.9° 6.2°
Average change in low temperature day-to-day 8.9° 8.0°
Precipitation Last Month Last Year
Chance of dry day after a precip day 64% 61%
Chance of precip day after a dry day 42% 28%

Weather forecast accuracy for Herndon, Virginia

Last Month
The Weather Channel   79.72%
AccuWeather   79.17%
MeteoGroup   78.61%
Weather Underground   78.33%
Foreca   78.06%
Dark Sky (forecast.io)   76.11%
NWS Digital Forecast   72.13%
World Weather Online   62.78%
Persistence   39.17%
Last Year
Weather Underground   77.10%
The Weather Channel   77.03%
MeteoGroup   76.58%
AccuWeather   76.09%
Foreca   75.14%
Dark Sky (forecast.io)   70.21%
NWS Digital Forecast   69.11%
World Weather Online   59.05%
Persistence   42.91%

ForecastAdvisor Fact

On average, MeteoGroup's low temperature forecasts for Herndon were off by 2.87 degrees last year.