Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

A Few Clouds

70°F

21°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 29.99 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 27 Aug 6:55 am EDT
Extended Forecast for

3 Miles WNW Conowingo MD

  • Today

    Today: Scattered showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then scattered showers and thunderstorms after 4pm. Some of the storms could be severe.  Partly sunny, with a high near 85. South wind 5 to 8 mph.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Scattered
    T-storms then
    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely before 11pm, then scattered showers. Some of the storms could be severe.  Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 67. Light and variable wind.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Friday

    Friday: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm.  Areas of fog before 10am.  Otherwise, partly sunny, with a high near 84. Light north wind.  Chance of precipitation is 20%.

    High: 84 °F

    Areas Fog
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Light north wind.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • 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

Detailed Forecast

Today
Scattered showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then scattered showers and thunderstorms after 4pm. Some of the storms could be severe. Partly sunny, with a high near 85. South wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 11pm, then scattered showers. Some of the storms could be severe. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Areas of fog before 10am. Otherwise, partly sunny, with a high near 84. Light north wind. Chance of precipitation is 20%.
Friday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 66. Calm wind.
Saturday
Mostly sunny, with a high near 85. Light north wind.
Saturday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 86.
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
A slight chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Conowingo MD
 39.7°N 76.22°W (Elev. 49 ft)
5:57 am EDT Aug 27, 2026
7am EDT Aug 27, 2026-6pm EDT Sep 2, 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