Weather history and climate summary information is available for the following locations:
- Dover
Warmest January Days
The warmest January days in Delaware are:
| Dover, Delaware | 1999 | 73.4°F |
| Dover, Delaware | 1974 | 72°F |
| Dover, Delaware | 1967 | 72°F |
| Dover, Delaware | 1995 | 72°F |
| Dover, Delaware | 1998 | 71.6°F |
Coldest January Days
The coldest January days in Delaware were:
| Dover, Delaware | 1985 | -4.9°F |
| Dover, Delaware | 1982 | -2.7°F |
| Dover, Delaware | 1994 | -2°F |
| Dover, Delaware | 1957 | 2.5°F |
| Dover, Delaware | 1970 | 3°F |
Wettest January Days
The wettest single days in January occurred:
| Dover, Delaware | 1976 | 2.4 inches |
| Dover, Delaware | 1999 | 2.4 inches |
| Dover, Delaware | 1979 | 2.3 inches |
| Dover, Delaware | 1978 | 2.2 inches |
| Dover, Delaware | 1991 | 2.1 inches |