Point Forecast: Washington-Dulles International Airport VA
 38.95N 77.44W (Elev. 285 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)141516171819202122230001020304050607080910111213
Temperature (°F)888889888686827977777675747474747373757780828486
Dewpoint (°F)767575767675767676757574747474737373757677777877
Heat Index (°F)999899999695897977777675757787909597
Surface Wind (mph)666666653332222222222233
Wind DirSESESESESSSSSSSSSSSSSESESSSSSS
Gust
Sky Cover (%)708176706970616162716567636365665964817069585559
Precipitation Potential (%)547163554744414243444743242016151311141010183239
Relative Humidity (%)686664687270829197949797100100100971001001009791858275
RainChcLklyLklyLklyChcChcChcChcChcChcChcChcSChcSChcSChcSChc----------SChcChcChc
ThunderChcChcChcChcChcChcChcChcChcChcChcChc------------------SChcChcChc
Fog------------------------------------------------

Date07/15
Hour (EDT)141516171819202122230001020304050607080910111213
Temperature (°F)868786858381797776767575747373737374757780828485
Dewpoint (°F)787877777777767676757574747373737373747576777777
Heat Index (°F)9810097969288797776767575757786909496
Surface Wind (mph)555533322222222222222233
Wind DirSSSSSSWWSSSESSSWSWNWNWNNNNEEESE
Gust
Sky Cover (%)626259687789847979797878777880818079787367626874
Precipitation Potential (%)404338526583535353535353232323232323303030303030
Relative Humidity (%)7775757782889197100971009710010010010010097979488858077
RainChcChcChcChcLklyOcnlChcChcChcChcChcChcSChcSChcSChcSChcSChcSChcChcChcChcChcChcChc
ThunderChcChcChcChcLklyLklyChcChcChcSChcSChcSChcSChcSChcSChcSChcSChcSChc------SChcSChcSChc
Fog------------------------------------------------

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