Point Forecast: Mc Lean VA
 38.95N 77.19W (Elev. 77 m)
Last Update: 1:30 pm EDT Jul 13, 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  

Date07/1307/14
Hour (EDT)181920212223000102030405060708091011121314151617
Temperature (°C)313029272626252424242423232324262728293131313029
Dewpoint (°C)242424232323232323232323232324242424242424242424
Heat Index (°C)363533292626252424242424262933343737373634
Surface Wind (mph)666533222222222223556555
Wind DirSESWSSESWSSSSESSSSESESSSSSSSSSS
Gust
Sky Cover (%)596953555961606265756062727465717471696169726873
Precipitation Potential (%)393429333842394328212422201716141417344153585260
Relative Humidity (%)687074828588909490949497979797918580757070707275
RainChcChcChcChcChcChcChcChcChcSChcSChcSChcSChcSChcSChc----SChcChcChcChcLklyChcLkly
ThunderChcChcChcChcChcChcChcChcSChcSChcSChc------------SChcChcChcChcLklyChcLkly

Date07/15
Hour (EDT)181920212223000102030405060708091011121314151617
Temperature (°C)292827262525252424242323232424262728292930303030
Dewpoint (°C)242424232324242423232222222323232424242424242424
Heat Index (°C)343229262525252424242424262932333435353535
Surface Wind (mph)333222222222222222335555
Wind DirSSSWSWSSESSSSWSWSWWNWNNEESESESSSSS
Gust
Sky Cover (%)808677717578787979808081797674737372757780808080
Precipitation Potential (%)697956565656565628282828282831313131313169696969
Relative Humidity (%)727785889094949794949393939494888579747270707070
RainLklyOcnlLklyLklyLklyLklyLklyLklyChcChcChcChcChcChcChcChcChcChcChcChcLklyLklyLklyLkly
ThunderLklyLklyChcChcChcSChcSChcSChcSChcSChcSChcSChcSChcSChc------SChcSChcSChcChcChcChcChc

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