Jefferson, in Maine, United States, is home to roughly 2,500 people in the Eastern Time Zone at 44.2°N latitude.
In 2025, Jefferson recorded an average annual temperature of 46°F. The hottest temperatures reached 94°F in June; the coolest were -7°F in January. Total precipitation for the year was 40 inches, with the wettest month being May. Snowfall for the year totaled approximately 19 inches.
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