Derby, in Connecticut, United States, is home to roughly 12,700 people in the Eastern Time Zone at 41.3°N latitude.
In 2025, Derby recorded an average annual temperature of 52°F. The hottest temperatures reached 103°F in June; the coolest were -1°F in January. Total precipitation for the year was 45 inches, with the wettest month being May. Snowfall for the year totaled approximately 9 inches.
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