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

Flooding Possible in the Southwest U.S.; Coastal Storm to Impact the East

Heavy to excessive rainfall is expected today into Wednesday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. A strong coastal storm will develop off the Mid-Atlantic coast Wednesday, intensifying toward southern New England this weekend. Significant coastal flooding, strong rip currents, and beach erosion from high surf expected. Read More >

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Light Rain Fog/Mist

58°F

14°C

Humidity 100%
Wind Speed NE 8 mph
Barometer 30.27 in
Dewpoint 58°F (14°C)
Visibility 5.00 mi
Last update 22 Sep 6:15 pm EDT
Extended Forecast for

Conowingo MD

  • Tonight

    Tonight: Rain likely with patchy drizzle before 8pm, then patchy drizzle with a chance of rain between 8pm and 5am, then patchy drizzle after 5am. Patchy fog before 10pm. Otherwise, cloudy, with a low around 53. Northeast wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 53 °F

    Rain Likely
    and Patchy
    Fog then
    Chance Rain

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 66. Northeast wind 9 to 11 mph, with gusts as high as 25 mph.

    High: 66 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. Northeast wind 5 to 7 mph, with gusts as high as 21 mph.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66. Northeast wind 9 to 11 mph, with gusts as high as 23 mph.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. North wind 3 to 6 mph.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers before 2am. Partly cloudy, with a low around 52. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers after 8am. Partly sunny, with a high near 69. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Tonight
Rain likely with patchy drizzle before 8pm, then patchy drizzle with a chance of rain between 8pm and 5am, then patchy drizzle after 5am. Patchy fog before 10pm. Otherwise, cloudy, with a low around 53. Northeast wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Mostly cloudy, with a high near 66. Northeast wind 9 to 11 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 49. Northeast wind 5 to 7 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 66. Northeast wind 9 to 11 mph, with gusts as high as 23 mph.
Thursday Night
Partly cloudy, with a low around 48. North wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 69.
Friday Night
A slight chance of showers before 2am. Partly cloudy, with a low around 52. Chance of precipitation is 20%.
Saturday
A slight chance of showers after 8am. Partly sunny, with a high near 69. Chance of precipitation is 20%.
Saturday Night
A chance of showers, mainly before 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Sunday
A slight chance of showers. Partly sunny, with a high near 69. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Conowingo MD
 39.67°N 76.17°W (Elev. 69 ft)
Last Update:
4:53 pm EDT Sep 22, 2026
Forecast Valid:
6pm EDT Sep 22, 2026-6pm EDT Sep 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation