Weather history and climate summary information is available for the following locations:
Warmest October Days
The warmest October days in Arizona are:
| Phoenix, Arizona | 1980 | 109°F |
| Phoenix, Arizona | 1980 | 107.1°F |
| Phoenix, Arizona | 1988 | 105.1°F |
| Phoenix, Arizona | 1955 | 105.1°F |
| Tucson, Arizona | 2010 | 104°F |
Coldest October Days
The coldest October days in Arizona were:
| Winslow, Arizona | 1980 | 18.1°F |
| Winslow, Arizona | 1997 | 19°F |
| Winslow, Arizona | 1975 | 19°F |
| Winslow, Arizona | 2009 | 19.9°F |
| Winslow, Arizona | 1996 | 19.9°F |
Wettest October Days
The wettest single days in October occurred:
| Winslow, Arizona | 1974 | 2.2 inches |
| Tucson, Arizona | 1983 | 2.1 inches |
| Tucson, Arizona | 1977 | 1.8 inches |
| Tucson, Arizona | 2000 | 1.8 inches |
| Tucson, Arizona | 1996 | 1.8 inches |