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 70%
Wind Speed W 9 mph
Barometer 29.68 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 17 Mar 3:15 am EDT
Extended Forecast for

2 Miles SW Charlestown MD

  • Overnight

    Overnight: Partly cloudy, with a low around 31. West wind around 18 mph, with gusts as high as 33 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 40. West wind around 16 mph, with gusts as high as 29 mph.

    High: 40 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming clear, with a low around 25. Northwest wind 5 to 11 mph, with gusts as high as 18 mph.

    Low: 25 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40. Light and variable wind.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. Light southeast wind.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 35.

    Low: 35 °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 after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.

    Low: 43 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 31. West wind around 18 mph, with gusts as high as 33 mph.
Tuesday
Increasing clouds, with a high near 40. West wind around 16 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly cloudy, then gradually becoming clear, with a low around 25. Northwest wind 5 to 11 mph, with gusts as high as 18 mph.
Wednesday
Mostly sunny, with a high near 40. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 29. Light southeast wind.
Thursday
Partly sunny, with a high near 49.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 55.
Friday Night
A chance of rain after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.
Saturday
A chance of rain before 8am. Partly sunny, with a high near 57. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Mostly cloudy, with a high near 61.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 38. 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:
2 Miles SW Charlestown MD
 39.56°N 76.01°W (Elev. 69 ft)
Last Update:
2:42 am EDT Mar 17, 2026
Forecast Valid:
3am EDT Mar 17, 2026-6pm EDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation