Point Forecast: Vienna MD
 38.49N 75.81W (Elev. 3 ft)
Last Update: 2:19 am EDT Jul 14, 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  
20ft Wind  
Vent Rate (x1000 mph-ft)
Pressure (in)
Atmospheric Dispersion Index
Low Visibility Occurrence Risk Index
Turner Stability Index
Ceiling Height
Visibility

48-Hour Period Starting:       Back 2 Days  

Date07/1407/15
Hour (EDT)040506070809101112131415161718192021222300010203
Temperature (°F)747474747678818384848586868585848179777776767676
Dewpoint (°F)727271737474757575757676767676767675757574747475
Heat Index (°F)8182879092929496969494938784828281818181
Surface Wind (mph)222223566777887533222222
Wind DirSESESESESESSSSSSSSSSSSSSSSSSS
Gust
Sky Cover (%)626464646464646366697271696868686872778282818184
Precipitation Potential (%)9910141920131523385662544452494040404552606659
Relative Humidity (%)939390979488827774747572727575778588949494949497
Rain--------SChcSChc--SChcSChcChcLklyLklyChcChcChcChcChcChcChcChcChcLklyLklyLkly
Thunder--------------SChcSChcChcLklyLklyChcChcChcChcChcChcChcChcChcChcChcChc

Date07/16
Hour (EDT)040506070809101112131415161718192021222300010203
Temperature (°F)767574767778798081828384848483828180787776767676
Dewpoint (°F)757574757676767675757575757575767676757575757575
Heat Index (°F)8180818283848687899092929290898786838281818181
Surface Wind (mph)222222235666776533222222
Wind DirSNENEESEWSWSSSSSSSSSSSSSSSSS
Gust
Sky Cover (%)868084808182807777777777777777775954504548525555
Precipitation Potential (%)565354586161616161616565656565651717171717173232
Relative Humidity (%)97100100979794918882797774747477828588919497979797
RainLklyChcChcLklyLklyLklyLklyLklyLklyLklyLklyLklyLklyLklyLklyLklySChcSChcSChcSChcSChcSChcChcChc
ThunderChcSChcSChcSChcSChcSChcSChcChcChcChcLklyLklyLklyChcChcChcSChcSChcSChcSChcSChcSChcChcChc

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