Severe Weather and Flash Flooding From the Upper Midwest to Mid-Atlantic; Heat Continues in the Central and Southeast U.S.

Severe thunderstorms are expected this afternoon and evening across parts of the Upper Midwest to western Great Lakes. Additional severe storms will also be possible in parts of the northern Plains, central Appalachians, and Mid-Atlantic. Extreme heat is expected to intensify across much of the Southeast and Tennessee Valley today, continuing through much of this week. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

A Few Clouds

83°F

28°C

Humidity 94%
Wind Speed SW 8 mph
Barometer 30.01 in (1017.1 mb)
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 27 Jul 4:56 pm EDT
Extended Forecast for

Gaithersburg MD

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely.  Mostly cloudy, with a high near 90. West wind around 6 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 7pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 74. Light west wind.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    T-storms
    Likely then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 94. Heat index values as high as 100. North wind 3 to 5 mph.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Light northwest wind.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: A chance of showers after 8pm.  Mostly cloudy, with a low around 76. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 88. Chance of precipitation is 70%.

    High: 88 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

This Afternoon
Showers and thunderstorms likely. Mostly cloudy, with a high near 90. West wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 74. Light west wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Sunny, with a high near 94. Heat index values as high as 100. North wind 3 to 5 mph.
Monday Night
Mostly clear, with a low around 73. Calm wind.
Tuesday
Sunny, with a high near 96. Light northwest wind.
Tuesday Night
Partly cloudy, with a low around 75.
Wednesday
Mostly sunny and hot, with a high near 97.
Wednesday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 30%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Gaithersburg MD
 39.13°N 77.21°W (Elev. 404 ft)
4:30 pm EDT Jul 27, 2025
5pm EDT Jul 27, 2025-6pm EDT Aug 3, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database