Hazardous Weather Conditions
Current conditions at
Shaw Air Force Base (KSSC)
Lat: 33.97°NLon: 80.48°WElev: 243ft.
Fair
94°F
34°C
| Humidity | 57% |
| Wind Speed | NW 3 mph |
| Barometer | 30.11 in (1019.5 mb) |
| Dewpoint | 76°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 108°F (42°C) |
| Last update | 15 Aug 12:55 pm EDT |
Extended Forecast for
Sumter SC
Heat Advisory August 15, 02:00pm until August 16, 08:00pm
NOW until 8:00pm Sun

Heat Advisory
This Afternoon

High: 96 °F
Chance
T-stormsTonight
Low: 77 °F
Chance
T-storms then
Partly CloudySunday
High: 96 °F
Mostly Sunny
then Slight
Chance
T-stormsSunday Night

Low: 77 °F
Mostly Clear
Monday

High: 103 °F
Hot
Monday Night

Low: 78 °F
Mostly Clear
Tuesday

High: 99 °F
Hot
Tuesday Night

Low: 76 °F
Partly Cloudy
Detailed Forecast
This Afternoon
A chance of showers and thunderstorms. Partly sunny, with a high near 96. Heat index values as high as 109. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 77. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Heat index values as high as 109. Calm wind. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 77. Calm wind.
Monday
Sunny and hot, with a high near 103. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Partly cloudy, with a low around 76.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 99. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 95. Chance of precipitation is 50%.
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ABOUT THIS FORECAST
Point Forecast:
Sumter SC
33.94°N 80.4°W (Elev. 154 ft)
33.94°N 80.4°W (Elev. 154 ft)
12:46 pm EDT Aug 15, 2026
2pm EDT Aug 15, 2026-6pm EDT Aug 21, 2026



