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 72%
Wind Speed W 12 mph
Barometer 29.69 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 17 Mar 3:35 am EDT
Extended Forecast for

Fallston MD

  • Overnight

    Overnight: Mostly clear, with a low around 28. West wind around 18 mph, with gusts as high as 32 mph.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 39. West wind around 17 mph, with gusts as high as 30 mph.

    High: 39 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23. Northwest wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38. Calm wind becoming south around 6 mph in the afternoon.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 28 °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. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.

    Low: 41 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 28. West wind around 18 mph, with gusts as high as 32 mph.
Tuesday
Increasing clouds, with a high near 39. West wind around 17 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 23. Northwest wind 5 to 11 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 38. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 28. 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. 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 62.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Monday
A chance of rain. Mostly sunny, with a high near 51. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fallston MD
 39.52°N 76.45°W (Elev. 499 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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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