Sumter, SC Weather Forecast
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Sumter Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
| Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Hi: 90°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C |
| POP: 50% | POP: 50% | POP: 70% | POP: 70% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 307 AM EDT Tue Sep 08 2026 

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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1257 AM EDT Tue Sep 8 2026
Key Messages
- 1. Slightly above average temperatures with chances for afternoon storms the second half of the week.
Discussion
... KEY MESSAGE 1. Slightly above average temperatures with chances for afternoon storms the second half of the week.
Drier air with dewpoints in the low to mid-60s have ushered in behind the cold front. Expect relatively quick recovery with high pressure offshore and strengthening ridging aloft over the central CONUS moving back into the area. While ensemble guidance does no...
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