Click on a day for an hourly weather forecast
The temperatures in South Dakota in July are comfortable with low of 17°C and and high up to 28°C.
You can expect about 3 to 8 days of rain in South Dakota during the month of July. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in South Dakota in July 2025.
If you’re planning to visit South Dakota in the near future, we highly recommend that you review the 14 day weather forecast for South Dakota before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -5° / -13° | 2 | 15 | 13 | 35 mm | Awful | South Dakota in January |
| February | -4° / -12° | 2 | 15 | 11 | 39 mm | Awful | South Dakota in February |
| March | 6° / -2° | 5 | 17 | 9 | 67 mm | Awful | South Dakota in March |
| April | 13° / 3° | 6 | 20 | 4 | 110 mm | Bad | South Dakota in April |
| May | 20° / 10° | 9 | 22 | 0 | 135 mm | Ok | South Dakota in May |
| June | 25° / 16° | 8 | 22 | 0 | 185 mm | Good | South Dakota in June |
| July | 28° / 17° | 6 | 25 | 0 | 109 mm | Perfect | South Dakota in July |
| August | 28° / 15° | 6 | 25 | 0 | 118 mm | Perfect | South Dakota in August |
| September | 24° / 12° | 5 | 25 | 0 | 94 mm | Perfect | South Dakota in September |
| October | 14° / 5° | 4 | 25 | 2 | 83 mm | Ok | South Dakota in October |
| November | 7° / -1° | 2 | 23 | 5 | 33 mm | Bad | South Dakota in November |
| December | -2° / -9° | 3 | 16 | 12 | 43 mm | Awful | South Dakota in December |