Point Forecast: Mc Lean VA
 38.95N 77.19W (Elev. 253 ft)
Last Update: 4:30 am EDT Jul 15, 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  

Date07/1507/16
Hour (EDT)060708091011121314151617181920212223000102030405
Temperature (°F)737475778083858788888887858583817978777676757575
Dewpoint (°F)737374757575757575757475747575757575747574747474
Heat Index (°F)75778590949698989796939490877978777676757575
Surface Wind (mph)122222333335555332222233
Wind DirNNNWNNNWNWWSSESESESSSSSSSWSSSSS
Gust
Sky Cover (%)606948415351424153576569575645354943444748483964
Precipitation Potential (%)1010634591730364854363415191818756679
Relative Humidity (%)1009797948577726866666368707277828891909794979797
Rain--------------SChcChcChcChcChcChcChcSChcSChcSChcSChc------------
Thunder--------------SChcChcChcChcChcChcChcSChcSChcSChc--------------

Date07/17
Hour (EDT)060708091011121314151617181920212223000102030405
Temperature (°F)757578808284868788888887868483828079787878787777
Dewpoint (°F)737475767676767676767676767575757575757474747474
Heat Index (°F)757578868993969899999998969290898579787878787777
Surface Wind (mph)356667889999887766666666
Wind DirSSSSWSWSWSWSSSSSSSSSSSSSWSWSWSWSW
Gust
Sky Cover (%)544753736761677379797979797973706764656768594940
Precipitation Potential (%)10112929292929296868686868682424242424247777
Relative Humidity (%)949791888277727068686870727477798588918888889090
Rain----ChcChcChcChcChcChcLklyLklyLklyLklyLklyLklySChcSChcSChcSChcSChcSChc--------
Thunder----------ChcChcChcLklyLklyLklyLklyLklyLklySChcSChcSChcSChcSChcSChc--------

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