Weather history and climate summary information is available for the following locations:
- Atlantic City
- Newark
- Wrightstown
Warmest December Days
The warmest December days in New Jersey are:
| Atlantic City, New Jersey | 1998 | 75.9°F |
| Newark, New Jersey | 1998 | 75.6°F |
| Wrightstown, New Jersey | 1998 | 75.2°F |
| Atlantic City, New Jersey | 1984 | 75°F |
| Wrightstown, New Jersey | 1966 | 75°F |
Coldest December Days
The coldest December days in New Jersey were:
| Atlantic City, New Jersey | 1980 | -2°F |
| Atlantic City, New Jersey | 1983 | -2°F |
| Newark, New Jersey | 1980 | -1.1°F |
| Wrightstown, New Jersey | 1942 | -0.6°F |
| Wrightstown, New Jersey | 1963 | 0°F |
Wettest December Days
The wettest single days in December occurred:
| Atlantic City, New Jersey | 2008 | 4.2 inches |
| Wrightstown, New Jersey | 2008 | 2.9 inches |
| Wrightstown, New Jersey | 1992 | 2.8 inches |
| Newark, New Jersey | 2008 | 2.8 inches |
| Atlantic City, New Jersey | 1993 | 2.7 inches |