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.

Partly Cloudy

35°F

2°C

Humidity 89%
Wind Speed W 10 mph
Barometer 29.62 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 17 Mar 1:55 am EDT
Extended Forecast for

Conowingo MD

  • Overnight

    Overnight: Partly cloudy, with a low around 29. West wind around 16 mph, with gusts as high as 32 mph.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 40. West wind around 15 mph, with gusts as high as 29 mph.

    High: 40 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40. Calm wind becoming south around 5 mph in the afternoon.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 50.

    High: 50 °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 56.

    High: 56 °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

Detailed Forecast

Overnight
Partly cloudy, with a low around 29. West wind around 16 mph, with gusts as high as 32 mph.
Tuesday
Increasing clouds, with a high near 40. West wind around 15 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 23. Northwest wind 5 to 9 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 40. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 28. Calm wind.
Thursday
Partly sunny, with a high near 50.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 56.
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 57.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Mostly cloudy, with a high near 62.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 36. 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
 39.67°N 76.17°W (Elev. 69 ft)
Last Update:
2:15 am EDT Mar 17, 2026
Forecast Valid:
2am EDT Mar 17, 2026-6pm EDT Mar 23, 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