Sumter, SC Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Sumter, SC in one place.
A slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 93. Northeast wind 2 to 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Sumter, SC is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 24, 2026 5:09 PM EDT.
The active forecast window currently covers Aug 25 to Aug 30, 2026 for Sumter, SC.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 25 to Aug 30, 2026
- Latest sync
- Aug 24, 2026 5:09 PM EDT
- Forecast office
- CAE
- Source
- NOAA / NWS
Daily Outlook
This Week in Sumter
Tuesday looks like the warmest upcoming period in Sumter at 93 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Tuesday at about 2 to 6 mph NE.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 24, 2026 5:09 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- CAE
- Radar station
- KCAE
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms between 7pm and 8pm. Mostly clear, with a low around 71. East wind 0 to 3 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers between 8am and 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers and thunderstorms likely. Mostly sunny, with a high near 92. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 11am, then showers and thunderstorms likely. Partly sunny, with a high near 92. Chance of precipitation is 70%.
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 70%.
A chance of rain showers before 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 70%.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Aug 25
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
2 to 6 mph
NE
|
|
Tuesday Night
Aug 25
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
71°F |
0 to 3 mph
E
|
|
Wednesday
Aug 26
|
Slight Chance Showers And Thunderstorms
|
92°F |
0 to 5 mph
E
|
|
Wednesday Night
Aug 26
|
Showers And Thunderstorms Likely
|
72°F |
0 to 5 mph
SE
|
|
Thursday
Aug 27
|
Showers And Thunderstorms Likely
|
92°F |
0 to 5 mph
SW
|
|
Thursday Night
Aug 27
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
71°F |
3 mph
SW
|
|
Friday
Aug 28
|
Showers And Thunderstorms Likely
|
88°F |
0 to 3 mph
SW
|
|
Friday Night
Aug 28
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
72°F |
2 mph
SW
|
|
Saturday
Aug 29
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
88°F |
0 to 3 mph
E
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms
|
71°F |
1 mph
E
|
|
Sunday
Aug 30
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
89°F |
0 to 3 mph
E
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms then Partly Cloudy
|
72°F |
2 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sumter.
