Weather history and climate summary information is available for the following locations:
- Eugene
- Medford
- Pendleton
- Portland
Warmest January Days
The warmest January days in Oregon are:
| Medford, Oregon | 1981 | 71.1°F |
| Pendleton, Oregon | 1995 | 69.1°F |
| Pendleton, Oregon | 2012 | 69.1°F |
| Pendleton, Oregon | 1974 | 68°F |
| Medford, Oregon | 1994 | 68°F |
Coldest January Days
The coldest January days in Oregon were:
| Pendleton, Oregon | 1979 | -12.1°F |
| Pendleton, Oregon | 1996 | -11°F |
| Pendleton, Oregon | 2004 | -11°F |
| Pendleton, Oregon | 1974 | -9.9°F |
| Pendleton, Oregon | 1943 | -7.1°F |
Wettest January Days
The wettest single days in January occurred:
| Medford, Oregon | 1982 | 3.9 inches |
| Pendleton, Oregon | 1973 | 3.4 inches |
| Eugene, Oregon | 1976 | 3.3 inches |
| Eugene, Oregon | 1974 | 3.1 inches |
| Portland, Oregon | 2009 | 3 inches |