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

Strong to Severe Thunderstorms Continue Tonight in the East; Early Heat Wave in the West

Scattered strong to severe storms with damaging winds and potentially a tornado or two are expected tonight from the coastal Carolinas into the Mid-Atlantic states. An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Read More >

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Mostly Cloudy

34°F

1°C

Humidity 65%
Wind Speed W 16 G 25 mph
Barometer 29.69 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 17 Mar 3:55 am EDT
Extended Forecast for

Conowingo MD

  • Today

    Today: Increasing clouds, with a high near 40. West wind 14 to 16 mph, with gusts as high as 30 mph.

    High: 40 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 22. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 18 mph.

    Low: 22 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 39. Calm wind becoming south around 5 mph in the afternoon.

    High: 39 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 49. Calm wind becoming south around 6 mph in the afternoon.

    High: 49 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of rain. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.

    Low: 41 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 40. West wind 14 to 16 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 22. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 18 mph.
Wednesday
Mostly sunny, with a high near 39. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 27. Calm wind.
Thursday
Partly sunny, with a high near 49. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 55.
Friday Night
A chance of rain. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 56.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Mostly cloudy, with a high near 61.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Conowingo MD
 39.69°N 76.16°W (Elev. 299 ft)
Last Update:
2:42 am EDT Mar 17, 2026
Forecast Valid:
4am EDT Mar 17, 2026-6pm EDT Mar 23, 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