Point Forecast: 3 Miles NW Chantilly VA
 38.91N 77.45W (Elev. 262 ft)
Last Update: 1:30 pm EDT Jul 13, 2025
Tabular Forecast
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Weather ElementsFire WeatherAviation Weather
Temperature (°F)
Dewpoint (°F)
Heat Index (°F)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)

Rain
Thunder
Fog
Mixing Height  
Trans. Wind  
Vent Rate (x1000 mph-ft)
Atmospheric Dispersion Index
Low Visibility Occurrence Risk Index
Ceiling Height
Visibility

48-Hour Period Starting:       Back 2 Days  

Date07/1307/14
Hour (EDT)161718192021222300010203040506070809101112131415
Temperature (°F)908887868380787776757474747473737577808285868687
Dewpoint (°F)757676757676767575747474747373737576777778777878
Heat Index (°F)10199989591867877767575778790979798100
Surface Wind (mph)666665333222222222233555
Wind DirSESESSSESSESSSSSSSSESESSSSSSSS
Gust
Sky Cover (%)757069706061626365666559716659618069705955596261
Precipitation Potential (%)635446434042434548442420161513111410101832384142
Relative Humidity (%)626870708088949497971001001009710010010097918580757775
RainLklyChcChcChcChcChcChcChcChcChcSChcSChcSChcSChc----------SChcChcChcChcChc
ThunderChcChcChcChcChcChcChcChcChcChc------------------SChcChcChcChcChc

Date07/15
Hour (EDT)161718192021222300010203040506070809101112131415
Temperature (°F)878684827977767675757473737373747577808284858686
Dewpoint (°F)777777777676767575747473737373737475757677777777
Heat Index (°F)999794907977767675757577858994969797
Surface Wind (mph)553332222222111222223355
Wind DirSSSSWSESESESSSSWWNWNWNWNWNNEEESESS
Gust
Sky Cover (%)596776898376777877777677787979787873696470758181
Precipitation Potential (%)385064835353535353532323232323233030303030307171
Relative Humidity (%)7275808591971009710097100100100100100979794858280777575
RainChcChcLklyOcnlChcChcChcChcChcChcSChcSChcSChcSChcSChcSChcChcChcChcChcChcChcLklyLkly
ThunderChcChcLklyLklyChcChcChcSChcSChcSChcSChcSChcSChcSChcSChcSChc------SChcSChcSChcChcChc

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