Point Forecast: Fairfax VA
 38.85N 77.29W (Elev. 400 ft)
Last Update: 1:31 pm EDT Jul 15, 2025
Tabular Forecast
[hide menu]Get as XML
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)192021222300010203040506070809101112131415161718
Temperature (°F)848379787777767675757473747779828385868787868582
Dewpoint (°F)767575757675747474747373747576767677777776767776
Heat Index (°F)939079787777767675757779899196979998969689
Surface Wind (mph)533222222233566678999999
Wind DirSSSSSSSSSSSSSSSSSSSSSSWSS
Gust
Sky Cover (%)575439313845465043514551596459517666715466747980
Precipitation Potential (%)25106897465667658151422283041596369
Relative Humidity (%)77778891979494949797971001009491828077757270727782
RainChc----------------------------SChc--SChcChcChcChcLklyLklyLkly
ThunderChc--------------------------------SChcSChcChcChcLklyLklyLkly

Date07/17
Hour (EDT)192021222300010203040506070809101112131415161718
Temperature (°F)808079787878777777767676777880838688909191919089
Dewpoint (°F)767576767575747474737374747575757575757575747474
Heat Index (°F)8685797878787777777676767778859095981011021021019998
Surface Wind (mph)876666777888888999999998
Wind DirSSSSSSSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSWSW
Gust
Sky Cover (%)768268686767676763605651464139383643505757575757
Precipitation Potential (%)641919191919194444448888883636363636
Relative Humidity (%)888591949191909090909094909185777066626060586061
RainLklySChcSChcSChcSChcSChcSChc------------------------ChcChcChcChcChc
ThunderLklySChcSChcSChcSChcSChcSChc------------------------ChcChcChcChcChc

Additional Forecasts and Information
International System of UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
Hazardous Weather Briefing Page
Past Weather InformationInteractive Forecast Map
Home