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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Light Rain

75°F

24°C

Humidity NA
Wind Speed SE 7 mph
Barometer 30.21 in (1024.1 mb)
Dewpoint N/A
Visibility 9.00 mi
Last update 17 Sep 1:56 pm EDT
Extended Forecast for

Suburb Maryland Fac MD

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms. Cloudy, with a high near 86. Southwest wind around 6 mph. Chance of precipitation is 50%.

    High: 86 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 70. Light and variable wind. Chance of precipitation is 40%.

    Low: 70 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 83. North wind 7 to 9 mph.

    High: 83 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. North wind around 6 mph.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 78. Northeast wind around 6 mph becoming east in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Monday

    Monday: A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 40%.

    High: 75 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Cloudy, with a high near 86. Southwest wind around 6 mph. Chance of precipitation is 50%.
Tonight
Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 70. Light and variable wind. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 83. North wind 7 to 9 mph.
Friday Night
Mostly clear, with a low around 61. North wind around 6 mph.
Saturday
Mostly sunny, with a high near 78. Northeast wind around 6 mph becoming east in the afternoon.
Saturday Night
Mostly cloudy, with a low around 65.
Sunday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Monday
A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
Tuesday
Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 60. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Suburb Maryland Fac MD
 39.09°N 77.05°W (Elev. 397 ft)
Last Update:
2:23 pm EDT Sep 17, 2026
Forecast Valid:
2pm EDT Sep 17, 2026-6pm EDT Sep 23, 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