Dangerous, Record-Breaking Heat to Continue in the Central and Eastern U.S.; Severe Thunderstorms in the Upper Midwest; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will continue across most of the central and eastern U.S this week. Heat indices will exceed 100 degrees. Severe storms will be possible from the northern Plains into the Midwest and Great Lakes regions, as well as across the southern Appalachians Thursday, with the primary threat large to very large hail. Critical fire weather to continue in the Four Corners Region Read More >

Current conditions at

Summerville Airport (KDYB)

Lat: 33.06°NLon: 80.28°WElev: 56ft.

Overcast

72°F

22°C

Humidity 88%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 2 Jul 1:15 am EDT
Extended Forecast for

Summerville SC

  • Overnight

    Overnight: Mostly clear, with a low around 70. Calm wind.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 96. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. Southeast wind 5 to 7 mph becoming calm  in the evening.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming southeast 5 to 8 mph in the afternoon.

    High: 97 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Southeast wind 5 to 7 mph becoming calm  in the evening.

    Low: 74 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 97.

    High: 97 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny, with a high near 96.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 70. Calm wind.
Thursday
Sunny, with a high near 96. Calm wind becoming east 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 72. Southeast wind 5 to 7 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Friday Night
Mostly clear, with a low around 74. Southeast wind 5 to 7 mph becoming calm in the evening.
Independence Day
Sunny, with a high near 97.
Saturday Night
Mostly clear, with a low around 76.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 96.
Sunday Night
Partly cloudy, with a low around 77.
Monday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 97.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Wednesday
Showers and thunderstorms likely. Mostly sunny, with a high near 95. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Summerville SC
 32.99°N 80.17°W (Elev. 75 ft)
8:30 pm EDT Jul 1, 2026
1am EDT Jul 2, 2026-6pm EDT Jul 8, 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