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

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Annapolis, United States Naval Academy (KNAK)

Lat: 38.99°NLon: 76.49°WElev: 3ft.

Light Rain

72°F

22°C

Humidity 84%
Wind Speed N 6 mph
Barometer 30.08 in (1018.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 21 May 1:54 am EDT
Extended Forecast for

Galesville MD

  • Overnight

    Overnight: A chance of showers, mainly before 3am. Cloudy, with a low around 62. North wind around 5 mph. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Cloudy, with a high near 66. Northeast wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 66 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Cloudy, with a low around 54. Northeast wind 8 to 10 mph. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    Showers

  • Friday

    Friday: Showers. High near 63. East wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 63 °F

    Showers

  • Friday Night

    Friday Night: Showers. Low around 51. East wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    Low: 51 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 5pm. High near 65. Chance of precipitation is 90%.

    High: 65 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Showers

  • Sunday

    Sunday: Showers likely before 8am. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.

    Low: 61 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A chance of showers, mainly before 3am. Cloudy, with a low around 62. North wind around 5 mph. Chance of precipitation is 40%.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Cloudy, with a high near 66. Northeast wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Cloudy, with a low around 54. Northeast wind 8 to 10 mph. Chance of precipitation is 50%.
Friday
Showers. High near 63. East wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers. Low around 51. East wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Saturday
Showers, with thunderstorms also possible after 5pm. High near 65. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm. Low around 56. Chance of precipitation is 90%.
Sunday
Showers likely before 8am. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Memorial Day
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Monday Night
Showers likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 78. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Galesville MD
 38.84°N 76.55°W (Elev. 3 ft)
Last Update:
2:22 am EDT May 21, 2026
Forecast Valid:
2am EDT May 21, 2026-6pm EDT May 27, 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