Using over 550,000 weather observations from over 300 US weather stations to help you understand what the chance of rain...shine...snow is on any given day
The single hottest days in January occurred:
| Midway, Hawaii | 2012 | 100.9°F |
| Barking Sands, Hawaii | 2012 | 99°F |
| Palm Springs, California | 2003 | 93.9°F |
| Grand Island, Nebraska | 1975 | 93.2°F |
| Long Beach, California | 2003 | 93°F |
The single coldest days in January occurred:
| Northway, Alaska | 1952 | -71.5°F |
| Bettles, Alaska | 1989 | -69.2°F |
| Northway, Alaska | 1971 | -66.5°F |
| Bettles, Alaska | 1975 | -65.9°F |
| Bettles, Alaska | 1947 | -65°F |
The wettest single days in January occurred:
| San Antonio, Texas | 1995 | 18.3 inches |
| Key West, Florida | 1974 | 18.2 inches |
| Houston, Texas | 1995 | 17.1 inches |
| Midway, Hawaii | 1976 | 15 inches |
| Key West, Florida | 1973 | 11.8 inches |