Climate in Sioux Falls: average temperature by month
In Sioux Falls the warmest month is July, with 28.6 °C on average in the afternoon; the coolest is January, with -4.3 °C.
Measured at the weather station Pipestone, 61 km away.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | -4.3 °C | -4.7 °C – -3.7 °C |
| February | -2.0 °C | -3.6 °C – 0.8 °C |
| March | 5.4 °C | 1.4 °C – 9.0 °C |
| April | 13.3 °C | 9.3 °C – 17.0 °C |
| May | 20.6 °C | 17.2 °C – 24.1 °C |
| June | 26.4 °C | 24.4 °C – 27.8 °C |
| July | 28.6 °C | 28.0 °C – 28.9 °C |
| August | 27.3 °C | 26.6 °C – 28.2 °C |
| September | 23.7 °C | 20.7 °C – 26.4 °C |
| October | 15.8 °C | 11.0 °C – 20.4 °C |
| November | 6.2 °C | 2.0 °C – 10.7 °C |
| December | -1.5 °C | -3.7 °C – 1.5 °C |