Weather history and climate summary information is available for the following locations:
- Dover
Warmest December Days
The warmest December days in Delaware are:
| Dover, Delaware | 1998 | 77°F |
| Dover, Delaware | 1966 | 74.3°F |
| Dover, Delaware | 2006 | 73.6°F |
| Dover, Delaware | 1956 | 72.3°F |
| Dover, Delaware | 1964 | 72.3°F |
Coldest December Days
The coldest December days in Delaware were:
| Dover, Delaware | 1942 | -1.7°F |
| Dover, Delaware | 1983 | 3.2°F |
| Dover, Delaware | 1989 | 7.2°F |
| Dover, Delaware | 1962 | 8.4°F |
| Dover, Delaware | 1993 | 9°F |
Wettest December Days
The wettest single days in December occurred:
| Dover, Delaware | 1986 | 2.8 inches |
| Dover, Delaware | 1996 | 2.6 inches |
| Dover, Delaware | 1977 | 2.3 inches |
| Dover, Delaware | 2009 | 2.1 inches |
| Dover, Delaware | 2008 | 2 inches |