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Severe Storms and Heavy Rain in Texas; Record Heat Along the East Coast

Scattered severe storms with large hail, isolated severe gusts, and localized flooding are expected across parts of west Texas. Isolated flash flooding is also possible in the central Gulf coast. An early season heat wave will continue to impact the eastern U.S. today, before isolated severe storms move across the central Appalachians into the Mid-Atlantic and far southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Conowingo MD

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm. Cloudy, with a low around 53. North wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and thunderstorms before 4pm, then a chance of showers. High near 63. Northeast wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 50. Light northeast wind. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 64. East wind 8 to 13 mph. Chance of precipitation is 50%.

    High: 64 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: Showers, mainly after 8pm. Low around 47. East wind 7 to 10 mph. Chance of precipitation is 80%.

    Low: 47 °F

    Showers

  • Saturday

    Saturday: Showers. High near 59. Chance of precipitation is 90%.

    High: 59 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 51. Chance of precipitation is 80%.

    Low: 51 °F

    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.

    High: 70 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.

    Low: 57 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm. Cloudy, with a low around 53. North wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Showers and thunderstorms before 4pm, then a chance of showers. High near 63. Northeast wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 50. Light northeast wind. Chance of precipitation is 20%.
Friday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 64. East wind 8 to 13 mph. Chance of precipitation is 50%.
Friday Night
Showers, mainly after 8pm. Low around 47. East wind 7 to 10 mph. Chance of precipitation is 80%.
Saturday
Showers. High near 59. Chance of precipitation is 90%.
Saturday Night
Showers. Low around 51. Chance of precipitation is 80%.
Sunday
A chance of showers. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 60.
Wednesday
Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Conowingo MD
 39.69°N 76.16°W (Elev. 299 ft)
Last Update:
7:53 pm EDT May 20, 2026
Forecast Valid:
8pm EDT May 20, 2026-6pm EDT May 27, 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