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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Baltimore, Inner Harbor (KDMH)

Lat: 39.28°NLon: 76.62°WElev: 20ft.

86°F

30°C

Humidity 43%
Wind Speed NA
Barometer 29.75 in (1007.5 mb)
Dewpoint 61°F (16°C)
Visibility NA
Heat Index86°F (30°C)
Last update 17 Jun 2:53 pm EDT
Extended Forecast for

Catonsville MD

  • This Afternoon

    This Afternoon: Isolated showers between 4pm and 5pm, then scattered sprinkles after 5pm. Partly sunny, with a high near 86. Southwest wind around 9 mph.

    High: 86 °F

    Isolated
    Showers

  • Tonight

    Tonight: Increasing clouds, with a low around 70. South wind around 8 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A slight chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 94. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.

    High: 94 °F

    Slight Chance
    Showers then
    Chance
    T-storms and
    Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 68. West wind 6 to 13 mph, with gusts as high as 23 mph.

    Low: 68 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 84. West wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Isolated showers between 4pm and 5pm, then scattered sprinkles after 5pm. Partly sunny, with a high near 86. Southwest wind around 9 mph.
Tonight
Increasing clouds, with a low around 70. South wind around 8 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 94. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 68. West wind 6 to 13 mph, with gusts as high as 23 mph.
Juneteenth
Mostly sunny, with a high near 84. West wind 7 to 13 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Catonsville MD
 39.26°N 76.73°W (Elev. 410 ft)
Last Update:
2:22 pm EDT Jun 17, 2026
Forecast Valid:
3pm EDT Jun 17, 2026-6pm EDT Jun 24, 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