Weather history and climate summary information is available for the following locations:
Warmest January Days
The warmest January days in Arizona are:
| Tucson, Arizona | 1953 | 87.1°F |
| Tucson, Arizona | 1950 | 87.1°F |
| Tucson, Arizona | 1987 | 86°F |
| Tucson, Arizona | 1999 | 86°F |
| Tucson, Arizona | 1999 | 86°F |
Coldest January Days
The coldest January days in Arizona were:
| Winslow, Arizona | 1977 | -7.1°F |
| Winslow, Arizona | 1987 | -3.8°F |
| Winslow, Arizona | 1975 | -2.9°F |
| Winslow, Arizona | 1979 | 0°F |
| Winslow, Arizona | 1982 | 0.1°F |
Wettest January Days
The wettest single days in January occurred:
| Phoenix, Arizona | 1973 | 5.9 inches |
| Tucson, Arizona | 1973 | 4.3 inches |
| Tucson, Arizona | 2008 | 3 inches |
| Winslow, Arizona | 1973 | 2.4 inches |
| Phoenix, Arizona | 2010 | 1.9 inches |