Sioux Falls weather live forecast

Today's maximum temperature in Sioux Falls is expected to be 23°C. Select a day from the live weather forecast for Sioux Falls, South Dakota, USA for more weather parameters.

Thursday
17th Sep
23

17

2

2
Friday
18th Sep
23

17

1

3
Saturday
19th Sep
18

15

0

2
Sunday
20th Sep
18

14

0

1
Monday
21st Sep
16

12

4

1

5-day weather forecast updated at 04:01 on Thursday 17th September 2026 GMT

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The 5-day weather forecast for South Dakota (Sioux Falls) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Sioux Falls weather forecast by day

Below are the detailed weather forecasts for Sioux Falls for the next 5 days.

Sioux Falls weather for Thursday 17th September 2026

Expect mostly cloudy with light rain in Sioux Falls, South Dakota with a maximum temperature of 23°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 59% chance of some rain and a gentle breeze of 15 kph from the east.

23
°C maximum temperature
17
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
2
UV index (Low)
59
% chance of some rain
<2
mm of rainfall expected
23
°C wind chill
15
kph wind from E

Sioux Falls weather for Friday 18th September 2026

Expect isolated thunderstorms in Sioux Falls, South Dakota with a maximum temperature of 23°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 20-30 mm of rainfall expected with 57% chance of some rain and a moderate breeze of 25 kph from the south-east.

23
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
3
UV index (Moderate)
57
% chance of some rain
<30
mm of rainfall expected
0
no heat & humidity
25
kph wind from SE

Sioux Falls weather for Saturday 19th September 2026

Expect isolated thunderstorms in Sioux Falls, South Dakota with a maximum temperature of 18°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 12% chance of some rain and a gentle breeze of 17 kph from the north.

18
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
2
UV index (Low)
12
% chance of some rain
<2
mm of rainfall expected
18
°C wind chill
17
kph wind from N

Sioux Falls weather for Sunday 20th September 2026

Expect mostly cloudy with light rain in Sioux Falls, South Dakota with a maximum temperature of 18°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 62% chance of some rain and a gentle breeze of 18 kph from the north-east.

18
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
1
UV index (Low)
62
% chance of some rain
<5
mm of rainfall expected
18
°C wind chill
18
kph wind from NE

Sioux Falls weather for Monday 21st September 2026

Expect mostly cloudy with rain in Sioux Falls, South Dakota with a maximum temperature of 16°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 63% chance of some rain and a gentle breeze of 18 kph from the east.