About Dayton, ME's Climate & Weather History

With a population of around 1,800, Dayton sits in Maine, United States. The city operates in the Eastern Time Zone.

In 2025, Dayton recorded an average annual temperature of 47°F — right at the 30-year normal of 48°F. The hottest day reached 99°F in June; the coldest was -12°F in March. Total precipitation was 40 inches (drier than usual). Snowfall totaled 17 inches, below the 69-inch average. The wettest month was May.