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 >

Current conditions at

Frederick Municipal Airport (KFDK)

Lat: 39.42°NLon: 77.37°WElev: 269ft.

Fair

70°F

21°C

Humidity 91%
Wind Speed S 5 mph
Barometer 30.05 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 20 May 3:55 am EDT
Extended Forecast for

3 Miles ENE Monrovia MD

  • Today

    Today: 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 3 to 7 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

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 11pm, then a chance of showers after 11pm.  Cloudy, with a low around 56. North wind 5 to 8 mph.  Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 2pm, then showers likely.  High near 64. Northeast wind 7 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 7pm, then a chance of showers after 8pm.  Mostly cloudy, with a low around 52. Light northeast wind.  Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers

  • Friday

    Friday: Showers.  High near 61. East wind around 8 mph.  Chance of precipitation is 90%.

    High: 61 °F

    Showers

  • Friday Night

    Friday Night: Showers.  Low around 49. Chance of precipitation is 90%.

    Low: 49 °F

    Showers

  • Saturday

    Saturday: Showers.  High near 62. Chance of precipitation is 90%.

    High: 62 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before 2am.  Cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before 2pm.  Mostly cloudy, with a high near 68. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers

Detailed Forecast

Today
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 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 11pm, then a chance of showers after 11pm. Cloudy, with a low around 56. North wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Showers and possibly a thunderstorm before 2pm, then showers likely. High near 64. Northeast wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers before 7pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 52. Light northeast wind. Chance of precipitation is 50%.
Friday
Showers. High near 61. East wind around 8 mph. Chance of precipitation is 90%.
Friday Night
Showers. Low around 49. Chance of precipitation is 90%.
Saturday
Showers. High near 62. Chance of precipitation is 90%.
Saturday Night
Showers likely, mainly before 2am. Cloudy, with a low around 53. Chance of precipitation is 60%.
Sunday
A chance of showers before 2pm. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.
Sunday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Monrovia MD
 39.38°N 77.2°W (Elev. 699 ft)
2:22 am EDT May 20, 2026
4am EDT May 20, 2026-6pm EDT May 26, 2026
 
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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