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.

Overcast

64°F

18°C

Humidity 63%
Wind Speed N 13 G 22 mph
Barometer 30.20 in (1022.7 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 21 May 12:54 pm EDT
Extended Forecast for

Londontowne MD

  • This Afternoon

    This Afternoon: Showers likely, mainly before 2pm. Cloudy, with a high near 66. Northeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers, mainly after 1am. Cloudy, with a low around 54. Northeast wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    Low: 54 °F

    Chance
    Showers

  • Friday

    Friday: Showers. High near 62. Northeast wind 11 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Showers

  • Friday Night

    Friday Night: Showers. Low around 51. East wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 5pm. High near 62. East wind 14 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.

    High: 62 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Showers

  • Sunday

    Sunday: A chance of showers before 8am. Mostly cloudy, with a high near 74. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

  • Memorial Day

    Memorial Day: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.

    High: 79 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

This Afternoon
Showers likely, mainly before 2pm. Cloudy, with a high near 66. Northeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of showers, mainly after 1am. Cloudy, with a low around 54. Northeast wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Friday
Showers. High near 62. Northeast wind 11 to 16 mph, with gusts as high as 21 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 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers, with thunderstorms also possible after 5pm. High near 62. East wind 14 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.
Saturday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 56. Chance of precipitation is 90%.
Sunday
A chance of showers before 8am. Mostly cloudy, with a high near 74. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 62.
Memorial Day
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Monday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 80. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Londontowne MD
 38.93°N 76.59°W (Elev. 49 ft)
Last Update:
10:53 am EDT May 21, 2026
Forecast Valid:
1pm EDT May 21, 2026-6pm EDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

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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