Weather history and climate summary information is available for the following locations:
- Caribou
- Millinocket
- Portland
- Presque Isle
Warmest October Days
The warmest October days in Maine are:
| Portland, Maine | 2011 | 84.9°F |
| Portland, Maine | 1986 | 84.9°F |
| Millinocket, Maine | 1944 | 84.4°F |
| Portland, Maine | 1990 | 82.9°F |
| Presque Isle, Maine | 1947 | 82.4°F |
Coldest October Days
The coldest October days in Maine were:
| Presque Isle, Maine | 1994 | 14°F |
| Caribou, Maine | 1976 | 14.9°F |
| Portland, Maine | 1976 | 14.9°F |
| Presque Isle, Maine | 1944 | 15.4°F |
| Caribou, Maine | 1978 | 16.9°F |
Wettest October Days
The wettest single days in October occurred:
| Portland, Maine | 1996 | 8.1 inches |
| Portland, Maine | 2005 | 5.1 inches |
| Portland, Maine | 1998 | 4.1 inches |
| Caribou, Maine | 1975 | 3.7 inches |
| Millinocket, Maine | 2005 | 3.7 inches |