Sioux Falls 7-day weather forecast

Written by:
September 8, 2025
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Sioux Falls 7-day weather forecast

Stacker created the forecast for Sioux Falls, South Dakota using data from OpenWeather. This week's high is 100 °F on Saturday, while the low is 56 °F on Monday. There are expected to be 2 sunny days and rain on 6 days this week.

There are currently no weather alerts.

Monday, September 8

- High of 82 °F, low of 56 °F (46% humidity)
- Mostly cloudy with a 97% chance of rain (1 mm of rain)
- Moderate risk of harm from sun exposure (4 UV index)
- Fresh breeze (20 mph wind)
- Sunrise at 6:58 AM, sunset at 7:50 PM
1 / 6
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Tuesday, September 9

- High of 91 °F, low of 57 °F (44% humidity)
- Partly cloudy with a 76% chance of rain (0 mm of rain)
- Moderate risk of harm from sun exposure (4 UV index)
- Moderate breeze (15 mph wind)
- Sunrise at 7:00 AM, sunset at 7:48 PM
2 / 6
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Wednesday, September 10

- High of 89 °F, low of 59 °F (39% humidity)
- Sunny with a 70% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (5 UV index)
- Gentle breeze (12 mph wind)
- Sunrise at 7:01 AM, sunset at 7:46 PM
3 / 6
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Thursday, September 11

- High of 92 °F, low of 60 °F (35% humidity)
- Mostly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (17 mph wind)
- Sunrise at 7:02 AM, sunset at 7:44 PM
4 / 6
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Friday, September 12

- High of 93 °F, low of 66 °F (32% humidity)
- Overcast with a 100% chance of rain (3 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 7:03 AM, sunset at 7:43 PM
5 / 6
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Saturday, September 13

- High of 100 °F, low of 66 °F (23% humidity)
- Partly cloudy with a 100% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (15 mph wind)
- Sunrise at 7:04 AM, sunset at 7:41 PM
6 / 6
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Sunday, September 14

- High of 96 °F, low of 63 °F (27% humidity)
- Sunny with a 41% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 7:05 AM, sunset at 7:39 PM
- Last quarter moon

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