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

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Fair

84°F

29°C

Humidity 52%
Wind Speed N 5 mph
Barometer 30.17 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 15 Aug 1:55 pm EDT
Extended Forecast for

Fallston MD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 87. Light east wind.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 68. Light east wind.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 2pm. Some of the storms could produce heavy rainfall. High near 80. South wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 80 °F

    Showers
    Likely then
    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 3am. Cloudy, with a low around 69. South wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers
    Likely

  • Monday

    Monday: A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Northwest wind 6 to 9 mph. Chance of precipitation is 20%.

    High: 87 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 87. Light east wind.
Tonight
Partly cloudy, with a low around 68. Light east wind.
Sunday
Showers, with thunderstorms also possible after 2pm. Some of the storms could produce heavy rainfall. High near 80. South wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Sunday Night
Showers and thunderstorms likely, mainly before 3am. Cloudy, with a low around 69. South wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Northwest wind 6 to 9 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 86.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Fallston MD
 39.54°N 76.42°W (Elev. 397 ft)
Last Update:
1:55 pm EDT Aug 15, 2026
Forecast Valid:
2pm EDT Aug 15, 2026-6pm EDT Aug 21, 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