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Severe Thunderstorms and Heavy Rainfall; Typhoon Watch in Guam and CNMI

Heavy to excessive rainfall will continue through tonight from the Texas Big Bend region into southern Oklahoma. Scattered damaging wind gusts and a few tornadoes may accompany a line of severe thunderstorms that is expected across the Mid-Atlantic into New England Friday. A Typhoon Watch continues for Guam and CNMI as Tropical Storm Champi will strengthen and approach the islands this weekend. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

58°F

14°C

Humidity 100%
Wind Speed Calm
Barometer 30.17 in (1023.0 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 15 Oct 7:56 pm EDT
Extended Forecast for

Gaithersburg MD

  • Tonight

    Tonight: A chance of showers, mainly before 4am. Cloudy, with a low around 57. Southeast wind around 7 mph. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 8am, then a chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81. Southwest wind 9 to 11 mph. Chance of precipitation is 30%.

    High: 81 °F

    Patchy Fog
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 2am, then a chance of showers. Increasing clouds, with a low around 47. Northwest wind 15 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 53. Breezy, with a north wind 21 to 24 mph, with gusts as high as 37 mph.

    High: 53 °F

    Decreasing
    Clouds and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. North wind 6 to 11 mph.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers, mainly before 4am. Cloudy, with a low around 57. Southeast wind around 7 mph. Chance of precipitation is 50%.
Friday
A slight chance of showers before 8am, then a chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81. Southwest wind 9 to 11 mph. Chance of precipitation is 30%.
Friday Night
Showers and thunderstorms likely before 2am, then a chance of showers. Increasing clouds, with a low around 47. Northwest wind 15 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 53. Breezy, with a north wind 21 to 24 mph, with gusts as high as 37 mph.
Saturday Night
Mostly clear, with a low around 35. North wind 6 to 11 mph.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gaithersburg MD
 39.13°N 77.21°W (Elev. 404 ft)
Last Update:
7:53 pm EDT Oct 15, 2026
Forecast Valid:
8pm EDT Oct 15, 2026-6pm EDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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