Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

77°F

25°C

Humidity 100%
Wind Speed Calm
Barometer 30.06 in (1018.7 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 25 Jul 9:56 pm EDT
Extended Forecast for

Boyds MD

  • Tonight

    Tonight: Scattered showers and thunderstorms before 11pm.  Partly cloudy, with a low around 75. Calm wind.  Chance of precipitation is 40%.

    Low: 75 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 93. Heat index values as high as 100. Calm wind.  Chance of precipitation is 30%.

    High: 93 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 74. Light south wind.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm.  Mostly cloudy, with a high near 91. Heat index values as high as 102. Calm wind becoming west around 6 mph in the afternoon.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am.  Partly cloudy, with a low around 74. Light northwest wind.  Chance of precipitation is 60%.

    Low: 74 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers after 2pm.  Mostly sunny, with a high near 92. Chance of precipitation is 20%.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °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 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Scattered showers and thunderstorms before 11pm. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 40%.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 100. Calm wind. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 74. Light south wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 91. Heat index values as high as 102. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 74. Light northwest wind. Chance of precipitation is 60%.
Monday
A slight chance of showers after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Mostly sunny, with a high near 95.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Boyds MD
 39.19°N 77.32°W (Elev. 449 ft)
10:29 pm EDT Jul 25, 2025
10pm EDT Jul 25, 2025-6pm EDT Aug 1, 2025
 
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Additional Resources

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