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

Fire Weather Concerns and Severe Thunderstorms through the Weekend

Dry and windy conditions, and some dry thunderstorms and lightning, may support hazardous fire activity in the northern Plains, high southern Plains and the Southwest this weekend. An active severe weather pattern is forecast for portions of the central and southern High Plains into the Upper Midwest through early the part of next week. Damaging winds, large hail, and tornadoes are possible. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

65°F

18°C

Humidity 49%
Wind Speed Calm
Barometer 30.03 in (1018.3 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 15 May 7:56 pm EDT
Extended Forecast for

4 Miles WSW North Potomac MD

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 51. Light north wind.

    Low: 51 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 83. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 63. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 87. Calm wind becoming northwest around 6 mph in the morning.

    High: 87 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 51. Light north wind.
Saturday
Sunny, with a high near 83. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Saturday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 63. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 87. Calm wind becoming northwest around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 64. Calm wind.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Thursday
A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW North Potomac MD
 39.07°N 77.31°W (Elev. 397 ft)
Last Update:
7:53 pm EDT May 15, 2026
Forecast Valid:
8pm EDT May 15, 2026-6pm EDT May 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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