South Dakota weather live forecast

Today's maximum temperature in South Dakota is expected to be 26°C. Select a day from the live weather forecast for South Dakota (Sioux Falls), USA for more weather parameters.

Sunday
17th May
26

13

2

6
Monday
18th May
14

7

0

2
Tuesday
19th May
13

4

3

3
Wednesday
20th May
17

3

8

5
Thursday
21st May
19

6

9

4

5-day weather forecast updated at 04:01 on Sunday 17th May 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.

Top South Dakota destinations

Below are temperatures expected today at popular countries, regions and places in South Dakota. Select a destination to see the detailed weather forecast for today, tomorrow and the outlook for the next five days.

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South Dakota weather forecast by day

Below are the detailed weather forecasts for South Dakota for the next 5 days. The forecasts shown are for Sioux Falls and may not represent the whole of South Dakota. Browse more destinations in South Dakota to view more weather forecasts.

South Dakota weather for Sunday 17th May 2026

Expect isolated thunderstorms in South Dakota with a maximum temperature of 26°C, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 83% chance of some rain and a moderate breeze of 28 kph from the east.

26
°C maximum temperature
13
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
6
UV index (High)
83
% chance of some rain
<20
mm of rainfall expected
26
°C wind chill
28
kph wind from E

South Dakota weather for Monday 18th May 2026

Expect isolated thunderstorms in South Dakota with a maximum temperature of 14°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 80% chance of some rain and a moderate breeze of 23 kph from the north.

14
°C maximum temperature
7
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
2
UV index (Low)
80
% chance of some rain
<10
mm of rainfall expected
14
°C wind chill
23
kph wind from N

South Dakota weather for Tuesday 19th May 2026

Expect mostly cloudy with light rain in South Dakota with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 11% chance of some rain and a moderate breeze of 27 kph from the north-west.

13
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
3
UV index (Moderate)
11
% chance of some rain
<2
mm of rainfall expected
13
°C wind chill
27
kph wind from NW

South Dakota weather for Wednesday 20th May 2026

Expect scattered clouds in South Dakota with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-east.

17
°C maximum temperature
3
°C minimum temperature
scattered clouds
8
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from SE

South Dakota weather for Thursday 21st May 2026

Expect sunshine and showers in South Dakota with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 5-10 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 25 kph from the south-east.