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

Baltimore, Baltimore-Washington International Airport (KBWI)

Lat: 39.17°NLon: 76.68°WElev: 135ft.

Rain Fog/Mist

69°F

21°C

Humidity 93%
Wind Speed N 5 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 67°F (19°C)
Visibility 6.00 mi
Last update 20 May 11:54 pm EDT
Extended Forecast for

2 Miles NW Arden-on-the-Severn MD

  • Overnight

    Overnight: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 60. North wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 5pm, then a chance of showers and thunderstorms after 5pm. Cloudy, with a high near 66. Northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers, mainly before 11pm. Cloudy, with a low around 54. Northeast wind around 8 mph. Chance of precipitation is 40%.

    Low: 54 °F

    Chance
    Showers

  • Friday

    Friday: Showers. High near 63. East wind 10 to 13 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 50. East wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 2pm. High near 65. Chance of precipitation is 80%.

    High: 65 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Showers

  • Sunday

    Sunday: A chance of showers. Cloudy, with a high near 75. Chance of precipitation is 50%.

    High: 75 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    Showers

Detailed Forecast

Overnight
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 60. North wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 5pm, then a chance of showers and thunderstorms after 5pm. Cloudy, with a high near 66. Northeast wind around 11 mph, with gusts as high as 20 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 before 11pm. Cloudy, with a low around 54. Northeast wind around 8 mph. Chance of precipitation is 40%.
Friday
Showers. High near 63. East wind 10 to 13 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 50. East wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Saturday
Showers, with thunderstorms also possible after 2pm. High near 65. Chance of precipitation is 80%.
Saturday Night
Showers. Low around 53. Chance of precipitation is 80%.
Sunday
A chance of showers. Cloudy, with a high near 75. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 81. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 63.
Wednesday
Mostly cloudy, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Arden-on-the-Severn MD
 39.09°N 76.62°W (Elev. 49 ft)
Last Update:
10:53 pm EDT May 20, 2026
Forecast Valid:
12am 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