About Cornish, ME's Climate & Weather History

With a population of around 1,300, Cornish sits in Maine, United States. The city operates in the Eastern Time Zone.

In 2025, Cornish recorded an average annual temperature of 46°F — about 1.0°F above the 30-year normal of 45°F. The hottest day reached 96°F in June; the coldest was -12°F in March. Total precipitation was 40 inches (drier than usual). The wettest month was May.