South Dakota weather live forecast

Today's maximum temperature in South Dakota is expected to be 17°C. Select a day from the live weather forecast for South Dakota (Sioux Falls), USA for more weather parameters.

Friday
22nd May
17

10

2

UV3
Saturday
23rd May
22

8

9

UV6
Sunday
24th May
27

10

11

UV8
Monday
25th May
30

13

13

UV7
Tuesday
26th May
29

16

12

UV7

5-day weather forecast updated at 04:01 on Friday 22nd 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 Friday 22nd May 2026

Expect mostly cloudy with rain in South Dakota with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 20-30 mm of rainfall expected with 100% chance of some rain and a fresh breeze of 29 kph from the south-east.

17
°C maximum temperature
10
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
UV3
UV index (Moderate)
100
% chance of some rain
<30
mm of rainfall expected
0
no heat & humidity
29
kph wind from SE

South Dakota weather for Saturday 23rd May 2026

Expect sunshine and showers in South Dakota with a maximum temperature of 22°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 2% chance of some rain and a gentle breeze of 14 kph from the west.

22
°C maximum temperature
8
°C minimum temperature
sunshine and showers
9
hours of sunshine
UV6
UV index (High)
2
% chance of some rain
<2
mm of rainfall expected
22
°C wind chill
14
kph wind from W

South Dakota weather for Sunday 24th May 2026

Expect isolated thunderstorms in South Dakota with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and a moderate breeze of 22 kph from the south.

27
°C maximum temperature
10
°C minimum temperature
isolated thunderstorms
11
hours of sunshine
UV8
UV index (Very High)
30
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
22
kph wind from S

South Dakota weather for Monday 25th May 2026

Expect isolated thunderstorms in South Dakota with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 2-5 mm of rainfall expected with 40% chance of some rain and a moderate breeze of 24 kph from the south.

30
°C maximum temperature
13
°C minimum temperature
isolated thunderstorms
13
hours of sunshine
UV7
UV index (High)
40
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
24
kph wind from S

South Dakota weather for Tuesday 26th May 2026

Expect scattered clouds in South Dakota with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the south.