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Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

87°F

31°C

Humidity 45%
Wind Speed NW 7 mph
Barometer 30.09 in (1019.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 19 May 6:56 pm EDT
Extended Forecast for

Carroll County Regional Airport/Jack B Poage Field MD

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 70. Southwest wind 5 to 7 mph. Chance of precipitation is 20%.

    Low: 70 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 92. West wind 6 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Sunny then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 1am, then a chance of showers. Cloudy, with a low around 55. North wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers after 2pm. Cloudy, with a high near 65. Northeast wind 9 to 11 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 50. Northeast wind 5 to 7 mph. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 62. Chance of precipitation is 80%.

    High: 62 °F

    Showers

  • Friday Night

    Friday Night: Showers. Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Showers

  • Saturday

    Saturday: Showers. High near 63. Chance of precipitation is 80%.

    High: 63 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 70. Southwest wind 5 to 7 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 92. West wind 6 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely before 1am, then a chance of showers. Cloudy, with a low around 55. North wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers after 2pm. Cloudy, with a high near 65. Northeast wind 9 to 11 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 50. Northeast wind 5 to 7 mph. Chance of precipitation is 50%.
Friday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 62. Chance of precipitation is 80%.
Friday Night
Showers. Low around 49. Chance of precipitation is 80%.
Saturday
Showers. High near 63. Chance of precipitation is 80%.
Saturday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Carroll County Regional Airport/Jack B Poage Field MD
 39.35°N 77°W (Elev. 449 ft)
Last Update:
6:07 pm EDT May 19, 2026
Forecast Valid:
7pm EDT May 19, 2026-6pm EDT May 26, 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