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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Fair

79°F

26°C

Humidity 33%
Wind Speed Calm
Barometer 30.22 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 9 Aug 3:05 pm EDT
Extended Forecast for

Charlestown MD

  • Tonight

    Tonight: Clear, with a low around 61. Calm wind.

    Low: 61 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 85. Light and variable wind.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85. Light south wind.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 30%.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 61. Calm wind.
Sunday
Sunny, with a high near 85. Light and variable wind.
Sunday Night
Mostly clear, with a low around 62. Calm wind.
Monday
Sunny, with a high near 85. Light south wind.
Monday Night
Mostly clear, with a low around 66. Calm wind.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Friday Night
A chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 87. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Charlestown MD
 39.56°N 75.96°W (Elev. 98 ft)
Last Update:
1:30 pm EDT Aug 9, 2025
Forecast Valid:
3pm EDT Aug 9, 2025-6pm EDT Aug 16, 2025
 
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