Weather history and climate summary information is available for the following locations:
- Huron
- Rapid City
- Sioux Falls
- Watertown
Warmest July Days
The warmest July days in South Dakota are:
| Rapid City, South Dakota | 1973 | 110.8°F |
| Huron, South Dakota | 2002 | 109.9°F |
| Huron, South Dakota | 2005 | 109°F |
| Rapid City, South Dakota | 1952 | 108°F |
| Huron, South Dakota | 2006 | 108°F |
Coldest July Days
The coldest July days in South Dakota were:
| Rapid City, South Dakota | 1995 | 41.9°F |
| Rapid City, South Dakota | 1992 | 41.9°F |
| Huron, South Dakota | 1976 | 41.9°F |
| Rapid City, South Dakota | 1959 | 42.1°F |
| Huron, South Dakota | 1975 | 42.1°F |
Wettest July Days
The wettest single days in July occurred:
| Huron, South Dakota | 1986 | 5 inches |
| Sioux Falls, South Dakota | 1992 | 3.4 inches |
| Sioux Falls, South Dakota | 2010 | 3 inches |
| Sioux Falls, South Dakota | 2001 | 2.5 inches |
| Sioux Falls, South Dakota | 2011 | 2.5 inches |