Sumter 7-day weather forecast

Written by:
December 15, 2025
ESOlex // Shutterstock

Sumter 7-day weather forecast

Stacker created the forecast for Sumter, South Carolina using data from OpenWeather. This week's high is 75 °F on Sunday, while the low is 38 °F on Monday. There are expected to be 2 sunny days and precipitation on 0 days this week.

There are currently no weather alerts.

Monday, December 22

- High of 53 °F, low of 38 °F (32% humidity)
- Partly cloudy with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 7:23 AM, sunset at 5:16 PM
1 / 6
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Tuesday, December 23

- High of 65 °F, low of 43 °F (66% humidity)
- Mostly cloudy with a 0% chance of rain
- Moderate risk of harm from sun exposure (2 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 7:23 AM, sunset at 5:17 PM
2 / 6
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Wednesday, December 24

- High of 71 °F, low of 52 °F (60% humidity)
- Sunny with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 7:24 AM, sunset at 5:17 PM
3 / 6
ESOlex // Shutterstock

Thursday, December 25

- High of 72 °F, low of 56 °F (56% humidity)
- Partly cloudy with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 7:24 AM, sunset at 5:18 PM
4 / 6
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Friday, December 26

- High of 73 °F, low of 60 °F (60% humidity)
- Overcast with a 0% chance of rain
- Moderate risk of harm from sun exposure (4 UV index)
- Moderate breeze (18 mph wind)
- Sunrise at 7:24 AM, sunset at 5:19 PM
5 / 6
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Saturday, December 27

- High of 62 °F, low of 55 °F (56% humidity)
- Fair with a 0% chance of rain
- Moderate risk of harm from sun exposure (4 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 7:25 AM, sunset at 5:19 PM
- First quarter moon
6 / 6
Valeriy Boyarskiy // Shutterstock

Sunday, December 28

- High of 75 °F, low of 55 °F (57% humidity)
- Mostly cloudy with a 0% chance of rain
- Moderate risk of harm from sun exposure (4 UV index)
- Moderate breeze (17 mph wind)
- Sunrise at 7:25 AM, sunset at 5:20 PM

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