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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Mostly Cloudy

72°F

22°C

Humidity 100%
Wind Speed NW 3 mph
Barometer 29.90 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 17 Aug 10:45 pm EDT
Extended Forecast for

Bel Air South MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 69. Calm wind becoming north around 5 mph after midnight.

    Low: 69 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers after 2pm. Cloudy, with a high near 76. Northeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 64. Northeast wind around 7 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers. Partly sunny, with a high near 77. East wind around 7 mph. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 63. East wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 20%.

    High: 80 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 69. Calm wind becoming north around 5 mph after midnight.
Monday
A slight chance of showers after 2pm. Cloudy, with a high near 76. Northeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Monday Night
A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 64. Northeast wind around 7 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of showers. Partly sunny, with a high near 77. East wind around 7 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 63. East wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of showers after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 63.
Friday
Mostly sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 65.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bel Air South MD
 39.49°N 76.34°W (Elev. 148 ft)
Last Update:
10:29 pm EDT Aug 17, 2025
Forecast Valid:
11pm EDT Aug 17, 2025-6pm EDT Aug 24, 2025
 
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