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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

A Few Clouds

74°F

23°C

Humidity 100%
Wind Speed S 3 mph
Barometer 30.10 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Last update 17 Sep 8:35 pm EDT
Extended Forecast for

Fallston MD

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 30%.

    Low: 69 °F

    Scattered
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82. North wind 7 to 9 mph.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. North wind around 7 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 77. Northeast wind 5 to 7 mph becoming southeast in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 64. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.

    High: 78 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.

    Low: 64 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 50%.

    High: 72 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    Showers

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 82. North wind 7 to 9 mph.
Friday Night
Mostly clear, with a low around 59. North wind around 7 mph.
Saturday
Mostly sunny, with a high near 77. Northeast wind 5 to 7 mph becoming southeast in the afternoon.
Saturday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 64. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Monday
A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Tuesday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Wednesday
A chance of showers. Partly sunny, with a high near 61. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Fallston MD
 39.52°N 76.43°W (Elev. 410 ft)
Last Update:
7:53 pm EDT Sep 17, 2026
Forecast Valid:
8pm EDT Sep 17, 2026-6pm EDT Sep 24, 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