Weather history and climate summary information is available for the following locations:
- Caribou
- Millinocket
- Portland
- Presque Isle
Warmest April Days
The warmest April days in Maine are:
| Portland, Maine | 2009 | 90°F |
| Millinocket, Maine | 2009 | 86°F |
| Portland, Maine | 2005 | 84.9°F |
| Portland, Maine | 2010 | 84.9°F |
| Millinocket, Maine | 1945 | 84.4°F |
Coldest April Days
The coldest April days in Maine were:
| Caribou, Maine | 1975 | -5.1°F |
| Caribou, Maine | 2003 | 0°F |
| Presque Isle, Maine | 1994 | 0.9°F |
| Caribou, Maine | 1995 | 1°F |
| Presque Isle, Maine | 1995 | 2.8°F |
Wettest April Days
The wettest single days in April occurred:
| Portland, Maine | 1973 | 4.7 inches |
| Caribou, Maine | 1973 | 3.7 inches |
| Portland, Maine | 2007 | 3.5 inches |
| Portland, Maine | 1983 | 3.4 inches |
| Portland, Maine | 1996 | 3.4 inches |