Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Fair

75°F

24°C

Humidity 68%
Wind Speed W 8 mph
Barometer 29.97 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 24 Aug 11:35 am EDT
Extended Forecast for

4 Miles WSW Lewisville PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. West wind around 8 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 58. Light northwest wind.

    Low: 58 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Northwest wind 5 to 7 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 83. Chance of precipitation is 70%.

    High: 83 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers.  Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Friday

    Friday: A slight chance of showers before 8am, then a chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 79. West wind around 8 mph.
Tonight
Clear, with a low around 58. Light northwest wind.
Tuesday
Sunny, with a high near 79. Northwest wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 60. Calm wind.
Wednesday
Mostly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Friday
A slight chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 65.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Lewisville PA
 39.71°N 75.93°W (Elev. 400 ft)
10:52 am EDT Aug 24, 2026
12pm EDT Aug 24, 2026-6pm EDT Aug 30, 2026
 
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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