Point Forecast: Fairfax VA
 38.85N 77.29W (Elev. 400 ft)
Last Update: 1:31 pm 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)141516171819202122230001020304050607080910111213
Temperature (°F)878989888784837978777776767575747374777982838586
Dewpoint (°F)757576767676757575767574747474737374757676767777
Heat Index (°F)9699100999893907978777776767575777989919697
Surface Wind (mph)555555332222222335666789
Wind DirWSSSSSSSSSSSSSSSSSSSSSSS
Gust
Sky Cover (%)566167695957543931384546504351455159645951766671
Precipitation Potential (%)34414740322510689746566765815142228
Relative Humidity (%)68646668707777889197949494979797100100949182807775
RainChcChcChcChcChcChc----------------------------SChc--SChcChc
ThunderChcChcChcChcChcChc--------------------------------SChcSChc

Date07/17
Hour (EDT)141516171819202122230001020304050607080910111213
Temperature (°F)878786858280807978787877777776767677788083868890
Dewpoint (°F)777676777676757676757574747473737474757575757575
Heat Index (°F)9998969689868579787878777777767676777885909598101
Surface Wind (mph)999998766667778888889999
Wind DirSSSWSSSSSSSSSWSWSWSWSWSWSWSWSWSWSWSWSW
Gust
Sky Cover (%)546674798076826868676767676360565146413938364350
Precipitation Potential (%)304159636964191919191919444444888888
Relative Humidity (%)727072778288859194919190909090909490918577706662
RainChcChcLklyLklyLklyLklySChcSChcSChcSChcSChcSChc------------------------
ThunderChcChcLklyLklyLklyLklySChcSChcSChcSChcSChcSChc------------------------

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