National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

66°F

19°C

Humidity 43%
Wind Speed S 14 mph
Barometer 30.44 in (1032.3 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 12 Apr 11:56 am EDT
Extended Forecast for

Clarksville MD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 70. South wind around 11 mph, with gusts as high as 23 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. Southeast wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers after 2pm. Partly sunny, with a high near 83. Southwest wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 83 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. West wind around 6 mph becoming calm after midnight.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Light southwest wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 65. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 70. South wind around 11 mph, with gusts as high as 23 mph.
Tonight
Mostly cloudy, with a low around 55. Southeast wind 8 to 10 mph, with gusts as high as 20 mph.
Monday
A slight chance of showers after 2pm. Partly sunny, with a high near 83. Southwest wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 60. West wind around 6 mph becoming calm after midnight.
Tuesday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Light southwest wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 65. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
Mostly cloudy, with a low around 67.
Thursday
Partly sunny, with a high near 89.
Thursday Night
Mostly cloudy, with a low around 66.
Friday
Mostly sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clarksville MD
 39.22°N 76.97°W (Elev. 551 ft)
Last Update:
10:53 am EDT Apr 12, 2026
Forecast Valid:
12pm EDT Apr 12, 2026-6pm EDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation