About Porter, ME's Climate & Weather History

With a population of around 1,500, Porter sits in Maine, United States. The city operates in the Eastern Time Zone.

In 2025, Porter recorded an average annual temperature of 45°F — about 0.7°F above the 30-year normal of 45°F. The hottest day reached 98°F in June; the coldest was -13°F in December. Total precipitation was 42 inches (drier than usual). The wettest month was May.