Weather in Sioux Falls: May
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Average day temperature: | 66.6°F |
| Average night temperature: | 52.0°F | |
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Number of sunny days: | 13 days |
| Day length: | 14.2 - 15.2 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.3 in. | |
| more information | ||
14 days
forecast
forecast
| Sioux Falls |
weather in
June
June
| Sioux Falls |
Air temperature in May, °F
Show year:
2026
2025
2024
The highest day temperature during May of 2026 was 94°F. At the same time the lowest night temperature was 31°F. Daily and nightly averages during May were 71.6°F and 51.4°F.
Sunny, partly cloudy and cloudy days
Mostly all days in May are sunny but cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Sioux Falls in May is 1.3 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 10.0 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 8.5.
Best time for vacation in Sioux Falls
Sioux Falls on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Sioux Falls
Local time: 04:01
August 14, friday
0600
66°F
W
7 mph
7 mph
0900
68°F
W
11 mph
11 mph
1200
68°F
W
11 mph
11 mph
1500
72°F
NW
10 mph
10 mph
1800
72°F
W
9 mph
9 mph
2100
70°F
SW
6 mph
6 mph
August 15, saturday
0000
70°F
SW
4 mph
4 mph
0300
70°F
NW
1 mph
1 mph
