Point Forecast: Gaithersburg MD
 39.13N 77.21W (Elev. 404 ft)
Last Update: 10:31 pm EDT Jul 16, 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  

Date07/17
Hour (EDT)000102030405060708091011121314151617181920212223
Temperature (°F)777676767575757679828588909192949392918986848281
Dewpoint (°F)757575747474737475757575747373737272727474757474
Heat Index (°F)77767676757575767989949899100101103101100999894928886
Surface Wind (mph)6667777777891010101011111097666
Wind DirSSSSSSWSWSWSWSWSWWWWWWWWWSWSWSWWW
Gust18202020202018
Sky Cover (%)838176827365513811171424332746423550513751455055
Precipitation Potential (%)303227201954321103611101924151410101010
Relative Humidity (%)949797949797949488797266605654515152546168747779
RainChcChcChcSChcSChc----------------------SChcSChcSChc----------
ThunderChcChc----------------------------SChcSChcSChc----------

Date07/18
Hour (EDT)000102030405060708091011121314151617181920212223
Temperature (°F)797876767574757677798183858686868584838281797876
Dewpoint (°F)747373727171717272727272727272727373737272727272
Heat Index (°F)7978767675757677798588919292929290898785797876
Surface Wind (mph)655555566666677776553322
Wind DirWWWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNNNNE
Gust
Sky Cover (%)514642434344413835394246505458616467646259595858
Precipitation Potential (%)101010101010101010101010101033333333333320202020
Relative Humidity (%)858590878790878785797470656363636770727274798287
Rain----------------------------ChcChcChcChcChcChcSChcSChcSChcSChc
Thunder----------------------------ChcChcChcChcChcChcSChcSChcSChc--

Additional Forecasts and Information
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