Weather history and climate summary information is available for the following locations:
- Casper
- Cheyenne
- Sheridan
Warmest August Days
The warmest August days in Wyoming are:
| Sheridan, Wyoming | 2008 | 102.9°F |
| Sheridan, Wyoming | 2001 | 102.9°F |
| Sheridan, Wyoming | 1983 | 102.9°F |
| Sheridan, Wyoming | 1995 | 102.9°F |
| Sheridan, Wyoming | 2000 | 102°F |
Coldest August Days
The coldest August days in Wyoming were:
| Sheridan, Wyoming | 2002 | 32°F |
| Casper, Wyoming | 1977 | 32.9°F |
| Sheridan, Wyoming | 1993 | 34°F |
| Casper, Wyoming | 2004 | 34°F |
| Sheridan, Wyoming | 1976 | 34.9°F |
Wettest August Days
The wettest single days in August occurred:
| Cheyenne, Wyoming | 1985 | 6.1 inches |
| Casper, Wyoming | 2007 | 2.2 inches |
| Cheyenne, Wyoming | 2008 | 2 inches |
| Cheyenne, Wyoming | 1981 | 1.3 inches |
| Cheyenne, Wyoming | 1983 | 1.2 inches |