Weather in Sioux Falls for May 2025
Special Weather Statement - See hour by hour.
So far, May 2025 in Sioux Falls shows a warmer trend than usual by 3.8 °F.
The forecast for the upcoming days in Sioux Falls predicts a temperature of 76 °F, which is slightly above the historical average.
In general, the average temperature in Sioux Falls at the beginning of May is 66 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 72 °F by the end of May.
The climate of Sioux Falls in May is notably wet, with an average of 14 rainy days, and a total of 3.19 in of precipitation.
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Sioux Falls Weather May
Temperatures trend during May in Sioux Falls
May weather in Sioux Falls day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Patchy rain possible | 66° /46° | 0 in | 4 | |
| May 2 | Patchy rain possible | 59° /42° | 0.25 in | 4 | |
| May 3 |  Overcast | 64° /41° | 0.08 in | 5 | |
| May 4 | Patchy rain possible | 66° /42° | 0.1 in | 5 | |
| May 5 |  Sunny | 69° /44° | 0 in | 6 | |
| May 6 | Light rain shower | 73° /48° | 0.39 in | 5 | |
| May 7 |  Thundery outbreaks possible | 68° /48° | 0 in | 5 | |
| May 8 | Light rain shower | 68° /44° | 0.09 in | 5 | |
| May 9 | Sunny | 89° /48° | 0 in | 2.1 | |
| May 10 | Sunny | 89° /51° | 0 in | 2.1 | |
| May 11 | Sunny | 91° /59° | 0 in | 2.3 | |
| May 12 | Sunny | 86° /59° | 0 in | 2.3 | |
| May 13 | Sunny | 82° /59° | 0 in | 0 | |
| May 14 | Sunny | 84° /60° | 0 in | 6 | |
| May 15 | Patchy rain possible | 75° /57° | 0.1 in | 4 | |
| May 16 | Patchy rain possible | 68° /51° | 0.01 in | 4 | |
| May 17 | Sunny | 73° /50° | 0 in | 5 | |
| May 18 |  Partly cloudy | 78° /55° | 0 in | 5 | |
| May 19 | Patchy rain possible | 66° /59° | 0.04 in | 4 | |
| May 20 |  Moderate rain | 59° /46° | 0.2 in | 3 | |
| May 21 | Overcast | 55° /44° | 0 in | 2 | |
| May 22 | Sunny | 69° /44° | 0 in | 4 | |
| May 23 | Partly cloudy | 77° /53° | 0.06 in | 6 | |
| May 24 | Sunny | 71° /51° | 0.03 in | 6 | |
| May 25 | Patchy rain possible | 71° /51° | 0.02 in | 5 | |
| May 26 | Partly cloudy | 71° /53° | 0 in | 6 | |
| May 27 | Sunny | 71° /51° | 0.02 in | 6 | |
| May 28 | Partly cloudy | 71° /50° | 0.01 in | 6 | |
| May 29 |  Moderate rain at times | 73° /51° | 0.04 in | 6 | |
| May 30 |  Heavy rain at times | 73° /59° | 0.24 in | 5 | |
| May 31 | Moderate or heavy rain shower | 75° /59° | 0.44 in | 5 | |
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Sioux Falls in May - FAQ
May rainfall patterns in Sioux Falls
UV exposure in Sioux Falls during May
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