With a population of around 2,300, Union sits in Maine, United States. The city operates in the Eastern Time Zone.
In 2025, Union recorded an average annual temperature of 46°F. The hottest temperatures reached 96°F in June; the coolest were -10°F in January. Total precipitation for the year was 43 inches, with the wettest month being May. Snowfall for the year totaled approximately 21 inches.
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