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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Partly Cloudy

80°F

27°C

Humidity 76%
Wind Speed N 8 mph
Barometer 30.03 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 28 Aug 3:15 pm EDT
Extended Forecast for

Fallston MD

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms. Partly sunny, with a high near 84. North wind around 5 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 60. Calm wind becoming north 5 to 7 mph after midnight.

    Low: 60 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 82. North wind around 6 mph becoming calm in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. South wind 3 to 8 mph. Chance of precipitation is 20%.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 71.

    Low: 71 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms. Partly sunny, with a high near 84. North wind around 5 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 60. Calm wind becoming north 5 to 7 mph after midnight.
Saturday
Sunny, with a high near 82. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Partly cloudy, with a low around 64. Calm wind.
Sunday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. South wind 3 to 8 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 89.
Monday Night
Mostly cloudy, with a low around 71.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
A slight chance of showers before 2am. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fallston MD
 39.51°N 76.4°W (Elev. 400 ft)
Last Update:
2:22 pm EDT Aug 28, 2026
Forecast Valid:
3pm EDT Aug 28, 2026-6pm EDT Sep 4, 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