Point Forecast: Reston VA
 38.95N 77.36W (Elev. 446 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)192021222300010203040506070809101112131415161718
Temperature (°F)858280787776757574747473737577798284868686868483
Dewpoint (°F)757575757574747374737373737575767676777676767675
Heat Index (°F)94898578777675757577798993979696969390
Surface Wind (mph)665553332222222235555553
Wind DirSSSESWSESSSSSSSESESSSSSSSSSSS
Gust
Sky Cover (%)715759616663686268596068627970695857606365617077
Precipitation Potential (%)403638404244442520191715131512111832404447415365
Relative Humidity (%)7279859194949794100979710010010094918277757272727777
RainChcChcChcChcChcChcChcChcSChcSChcSChcSChc--SChc----SChcChcChcChcChcChcChcLkly
ThunderChcChcChcChcChcChcChc------------------SChcChcChcChcChcChcChcLkly

Date07/15
Hour (EDT)192021222300010203040506070809101112131415161718
Temperature (°F)817977767675757473737373747577808284858686858483
Dewpoint (°F)767575757575747473737373747474757575757575757575
Heat Index (°F)877977767675757577858992949595949290
Surface Wind (mph)332222222222222223355555
Wind DirSSSSSESSSSWWNWNWNWNWNEESESSSSSS
Gust
Sky Cover (%)888376777878777777787877777672686469758080808080
Precipitation Potential (%)825555555555552424242424243030303030307070707070
Relative Humidity (%)8588949797100971001001001001001009790857974727070727477
RainOcnlLklyLklyLklyLklyLklyLklySChcSChcSChcSChcSChcSChcChcChcChcChcChcChcLklyLklyLklyLklyLkly
ThunderLklyChcChcChcSChcSChcSChcSChcSChcSChcSChcSChcSChc------SChcSChcSChcChcChcChcChcChc

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