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

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Overcast

67°F

19°C

Humidity 65%
Wind Speed Vrbl 6 mph
Barometer 30.16 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 21 May 1:15 pm EDT
Extended Forecast for

Prince Frederick MD

  • This Afternoon

    This Afternoon: Scattered showers, mainly after 5pm. Cloudy, with a high near 69. Northeast wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 69 °F

    Scattered
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely. Cloudy, with a low around 54. Northeast wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers
    Likely

  • Friday

    Friday: Showers. High near 63. Northeast wind 11 to 17 mph, with gusts as high as 23 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 52. East wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 5pm. High near 66. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    High: 66 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 58. Chance of precipitation is 90%.

    Low: 58 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly before 8am. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Memorial Day

    Memorial Day: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

This Afternoon
Scattered showers, mainly after 5pm. Cloudy, with a high near 69. Northeast wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Tonight
Showers and thunderstorms likely. Cloudy, with a low around 54. Northeast wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers. High near 63. Northeast wind 11 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers. Low around 52. East wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers, with thunderstorms also possible after 5pm. High near 66. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm. Low around 58. Chance of precipitation is 90%.
Sunday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Memorial Day
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Monday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 80. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Wednesday
Partly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prince Frederick MD
 38.55°N 76.6°W (Elev. 98 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

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