Weather history and climate summary information is available for the following locations:
- Caribou
- Millinocket
- Portland
- Presque Isle
Warmest December Days
The warmest December days in Maine are:
| Portland, Maine | 2001 | 71.1°F |
| Portland, Maine | 1998 | 70°F |
| Portland, Maine | 1982 | 69.1°F |
| Portland, Maine | 2009 | 68°F |
| Portland, Maine | 1990 | 66°F |
Coldest December Days
The coldest December days in Maine were:
| Presque Isle, Maine | 2008 | -32.8°F |
| Presque Isle, Maine | 1958 | -32.1°F |
| Caribou, Maine | 1989 | -31°F |
| Presque Isle, Maine | 1951 | -27.9°F |
| Presque Isle, Maine | 1989 | -27.8°F |
Wettest December Days
The wettest single days in December occurred:
| Portland, Maine | 1990 | 3 inches |
| Caribou, Maine | 2010 | 3 inches |
| Caribou, Maine | 2007 | 2.8 inches |
| Portland, Maine | 1973 | 2.7 inches |
| Portland, Maine | 1975 | 2.5 inches |