Point Forecast: Washington-Dulles International Airport VA
 38.95N 77.44W (Elev. 87 m)
Last Update: 10:30 am EDT Jul 12, 2025
Tabular Forecast
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Weather ElementsFire WeatherAviation Weather
Temperature (°C)
Dewpoint (°C)
Heat Index (°C)

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

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

48-Hour Period Starting:       Back 2 Days  

Date07/1207/13
Hour (EDT)202122230001020304050607080910111213141516171819
Temperature (°C)282726262524242323232323242627272829292929292827
Dewpoint (°C)242424232323232323232323242425252525252525252524
Heat Index (°C)32312626252424242631313334363636343331
Surface Wind (mph)665533332222333556666665
Wind DirSESESESESESESSESESESESESESESESESESESESESESESS
Gust
Sky Cover (%)393943556362565662686266596767667379868686868686
Precipitation Potential (%)131822111615131415121011353535353535787878787878
Relative Humidity (%)778288889094971009710010097979491888280777777808285
Rain--SChcSChc--SChcSChc----SChc------ChcChcChcChcChcChcOcnlOcnlOcnlOcnlOcnlOcnl
Thunder--SChcSChc--SChcSChc------------------SChcSChcSChcChcChcChcLklyLklyLkly
Fog------------------------------------------------

Date07/14
Hour (EDT)202122230001020304050607080910111213141516171819
Temperature (°C)272625242423232323232323242527282929303030292928
Dewpoint (°C)242424242423232323232323242425252524242424242424
Heat Index (°C)3026252424242531323434363635343332
Surface Wind (mph)533222222222223335553332
Wind DirSSSSSSSSSSSWSWWWNWNWNWNWNWNNENEESE
Gust
Sky Cover (%)727579827672657176828282827773687173767676767676
Precipitation Potential (%)585858585858262626262626383838383838636363636363
Relative Humidity (%)889194971001001001001001001001001009791858075727270727477
RainLklyLklyLklyLklyLklyLklyChcChcChcChcChcChcChcChcChcChcChcChcLklyLklyLklyLklyLklyLkly
ThunderChcChcChcSChcSChcSChc------------------ChcChcChcChcChcChcChcChcChc
Fog------------------------------------------------

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