Sumter 7-day weather forecast

Written by:
June 8, 2026
ESOlex // Shutterstock

Sumter 7-day weather forecast

created the forecast for Sumter, South Carolina using data from . This week's high is 97 掳F on Thursday, while the low is 67 掳F on Sunday. There are expected to be 0 sunny days and rain on 2 days this week.

There are currently no weather alerts.

Monday, June 15

- High of 88 掳F, low of 73 掳F (35% humidity)
- Partly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (11 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 6:09 AM, sunset at 8:33 PM
1 / 6
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Tuesday, June 16

- High of 79 掳F, low of 71 掳F (48% humidity)
- Overcast with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 6:10 AM, sunset at 8:34 PM
2 / 6
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Wednesday, June 17

- High of 90 掳F, low of 71 掳F (52% humidity)
- Overcast with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 6:10 AM, sunset at 8:34 PM
3 / 6
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Thursday, June 18

- High of 97 掳F, low of 74 掳F (34% humidity)
- Mostly cloudy with a 100% chance of rain (8 mm of rain)
- Very high risk of harm from sun exposure (11 UV index)
- Moderate breeze (17 mph wind)
- Sunrise at 6:10 AM, sunset at 8:34 PM
4 / 6
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Friday, June 19

- High of 85 掳F, low of 73 掳F (66% humidity)
- Overcast with a 100% chance of rain (6 mm of rain)
- Moderate breeze (15 mph wind)
- Sunrise at 6:10 AM, sunset at 8:35 PM
5 / 6
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Saturday, June 20

- High of 88 掳F, low of 71 掳F (33% humidity)
- Overcast with a 0% chance of rain
- Gentle breeze (9 mph wind)
- Sunrise at 6:10 AM, sunset at 8:35 PM
6 / 6
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Sunday, June 21

- High of 94 掳F, low of 67 掳F (27% humidity)
- Partly cloudy with a 0% chance of rain
- Gentle breeze (11 mph wind)
- Sunrise at 6:10 AM, sunset at 8:35 PM
- First quarter moon

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