Point Forecast: Gaithersburg MD
 39.13N 77.21W (Elev. 404 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  

Date07/16
Hour (EDT)000102030405060708091011121314151617181920212223
Temperature (°F)777675757474737477798284868788888683818180797877
Dewpoint (°F)767575757474737476767777777777777676767676767676
Heat Index (°F)777675757779909497991001009691878786797877
Surface Wind (mph)222222223366778777766666
Wind DirSSSSSSSSSSSSSSSSSSWSSSSSS
Gust
Sky Cover (%)425864485758605663637379815968728187887480686664
Precipitation Potential (%)5465544544912172832455977575525252525
Relative Humidity (%)979710010010010010010097918580757270707280858588919497
Rain------------------------SChcChcChcChcLklyOcnlLklyLklyChcChcChcChc
Thunder------------------------SChcSChcChcChcLklyLklyLklyLklyChcChcChcSChc

Date07/17
Hour (EDT)000102030405060708091011121314151617181920212223
Temperature (°F)767676767575757677808386889091919190898886848381
Dewpoint (°F)757574747474757576767575757474747474747575767677
Heat Index (°F)767676767575757677869095989910110110199989895939188
Surface Wind (mph)666666666778888877766655
Wind DirSSWSWSWSWSWSWSWSWSWSWSWSWWWWSWSWSWSWSWSWSWSW
Gust
Sky Cover (%)666769666461534436363535424855555555555536343230
Precipitation Potential (%)252577777710101010101032323232323210101010
Relative Humidity (%)9797949497971009797887770666058585860616670778088
RainChcChc------------------------ChcChcChcChcChcChc--------
ThunderSChcSChc------------------------ChcChcChcChcChcChc--------

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