Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Shaw Air Force Base (KSSC)

Lat: 33.97°NLon: 80.48°WElev: 243ft.

Overcast

75°F

24°C

Humidity 96%
Wind Speed SE 6 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Last update 11 Oct 1:55 am EDT
Extended Forecast for

Sumter SC

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms after 3am.  Mostly cloudy, with a low around 71. Southeast wind around 7 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly before noon.  Partly sunny, with a high near 78. South wind 8 to 15 mph.  Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. Southwest wind around 8 mph.

    Low: 62 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 83. Northwest wind 7 to 11 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. Light north wind.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 71. Southeast wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms, mainly before noon. Partly sunny, with a high near 78. South wind 8 to 15 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Mostly clear, with a low around 62. Southwest wind around 8 mph.
Columbus Day
Sunny, with a high near 83. Northwest wind 7 to 11 mph.
Monday Night
Mostly clear, with a low around 59. Light north wind.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Clear, with a low around 60.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Clear, with a low around 63.
Thursday
Sunny, with a high near 89.
Thursday Night
Clear, with a low around 63.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 59.
Saturday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Sumter SC
 33.97°N 80.4°W (Elev. 180 ft)
2:21 am EDT Oct 11, 2026
2am EDT Oct 11, 2026-6pm EDT Oct 17, 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