Point Forecast: Washington-Dulles International Airport VA
 38.95N 77.44W (Elev. 87 m)
Last Update: 10:30 am EDT Jul 14, 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  

Date07/1407/15
Hour (EDT)151617181920212223000102030405060708091011121314
Temperature (°C)302929282726252424242323232323232324252627282929
Dewpoint (°C)242424242424232323232323222222222223232324242424
Heat Index (°C)3534343331262524242424252631323334
Surface Wind (mph)555333222222112112222233
Wind DirSESESSSNNWSENESNWWNWNWNNWNNENENEESES
Gust
Sky Cover (%)747978849485858686727278726984867270626772747779
Precipitation Potential (%)616566769058472517171725201717131328282828282868
Relative Humidity (%)7072778082919097979497100939797979794908582777472
RainLklyLklyLklyOcnlOcnlLklyChcChcSChcSChcSChcChcSChcSChcSChc----ChcChcChcChcChcChcLkly
ThunderLklyLklyLklyLklyLklyChcChcChcSChcSChcSChc------------------SChcSChcSChcChc
Fog------------------------------------------------

Date07/16
Hour (EDT)151617181920212223000102030405060708091011121314
Temperature (°C)292929282827272625242424232323232424262729303131
Dewpoint (°C)242424232324242424242323232323232324242424242424
Heat Index (°C)3434333231312926252424242424263134363737
Surface Wind (mph)355533322222222233556677
Wind DirSSSSSSSSSSSSSSSSSSSSSSSS
Gust
Sky Cover (%)797979797957534945495357636874747474665951627384
Precipitation Potential (%)686868686823232323232311111111111127272727272775
Relative Humidity (%)727274747782859194979797100971001009797918277727070
RainLklyLklyLklyLklyLklySChcSChcSChcSChcSChcSChc------------ChcChcChcChcChcChcOcnl
ThunderChcChcChcChcChcSChcSChcSChc------------------------SChcSChcSChcLkly
Fog------------------------------------------------

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