Sioux Falls weather live forecast

Today's maximum temperature in Sioux Falls is expected to be 14°C. Select a day from the live weather forecast for Sioux Falls, South Dakota, USA for more weather parameters.

Monday
18th May
14

7

0

3
Tuesday
19th May
13

4

5

4
Wednesday
20th May
18

2

5

7
Thursday
21st May
20

7

11

4
Friday
22nd May
18

8

0

7

5-day weather forecast updated at 04:01 on Monday 18th 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.

Sioux Falls weather forecast by day

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

Sioux Falls weather for Monday 18th May 2026

Expect isolated thunderstorms in Sioux Falls, South Dakota with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 77% chance of some rain and a moderate breeze of 27 kph from the north.

14
°C maximum temperature
7
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
3
UV index (Moderate)
77
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
27
kph wind from N

Sioux Falls weather for Tuesday 19th May 2026

Expect mostly cloudy with light rain in Sioux Falls, South Dakota with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 4% chance of some rain and a moderate breeze of 28 kph from the north-west.

13
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
4
UV index (Moderate)
4
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
28
kph wind from NW

Sioux Falls weather for Wednesday 20th May 2026

Expect broken clouds in Sioux Falls, South Dakota with a maximum temperature of 18°C, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south.

18
°C maximum temperature
2
°C minimum temperature
broken clouds
5
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from S

Sioux Falls weather for Thursday 21st May 2026

Expect sunshine and showers in Sioux Falls, South Dakota with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a moderate breeze of 26 kph from the south-east.

20
°C maximum temperature
7
°C minimum temperature
sunshine and showers
11
hours of sunshine
4
UV index (Moderate)
31
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
26
kph wind from SE

Sioux Falls weather for Friday 22nd May 2026

Expect mostly cloudy with rain in Sioux Falls, South Dakota with a maximum temperature of 18°C, maximum UV of 7 (High) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 31% chance of some rain and a moderate breeze of 20 kph from the south-east.