Sumter 7-day weather forecast

Written by:
December 29, 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 Wednesday, while the low is 39 °F on Monday. There is expected to be 1 sunny day and rain on 1 day this week.

There are currently no weather alerts.

Monday, January 5

- High of 63 °F, low of 39 °F (56% humidity)
- Sunny with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Light breeze (7 mph wind)
- Sunrise at 7:27 AM, sunset at 5:26 PM
1 / 6
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Tuesday, January 6

- High of 69 °F, low of 51 °F (58% humidity)
- Overcast with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 7:27 AM, sunset at 5:26 PM
2 / 6
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Wednesday, January 7

- High of 75 °F, low of 58 °F (56% humidity)
- Mostly cloudy with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 7:27 AM, sunset at 5:27 PM
3 / 6
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Thursday, January 8

- High of 70 °F, low of 52 °F (51% humidity)
- Overcast with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Light breeze (6 mph wind)
- Sunrise at 7:27 AM, sunset at 5:28 PM
4 / 6
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Friday, January 9

- High of 75 °F, low of 56 °F (56% humidity)
- Overcast with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 7:27 AM, sunset at 5:29 PM
5 / 6
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Saturday, January 10

- High of 72 °F, low of 63 °F (65% humidity)
- Overcast with a 100% chance of rain (9 mm of rain)
- Moderate risk of harm from sun exposure (3 UV index)
- Moderate breeze (15 mph wind)
- Sunrise at 7:27 AM, sunset at 5:30 PM
- Last quarter moon
6 / 6
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Sunday, January 11

- High of 61 °F, low of 48 °F (32% humidity)
- Overcast with a 0% chance of rain
- Moderate risk of harm from sun exposure (3 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 7:26 AM, sunset at 5:31 PM

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