National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Orangeburg, Orangeburg Municipal Airport (KOGB)

Lat: 33.46°NLon: 80.85°WElev: 197ft.

Mostly Cloudy

75°F

24°C

Humidity 90%
Wind Speed Calm
Barometer 30.13 in (1019.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 3 Oct 9:53 am EDT
Extended Forecast for

Barnwell SC

  • Today

    Today: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 10pm. Cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 78. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 68. Calm wind. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 68 °F

    Showers

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 2pm. Cloudy, with a high near 75. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

    High: 75 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 10pm. Cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 78. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm. Low around 68. Calm wind. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Monday
Showers likely, with thunderstorms also possible after 2pm. Cloudy, with a high near 75. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Monday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Partly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Partly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Barnwell SC
 33.23°N 81.36°W (Elev. 207 ft)
Last Update:
2:21 am EDT Oct 3, 2026
Forecast Valid:
10am EDT Oct 3, 2026-6pm EDT Oct 9, 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