Princeton is a city of approximately 7,600 people in Illinois, United States. Located in the Central Time Zone at 41.4°N latitude.
In 2025, Princeton recorded an average annual temperature of 52°F. The hottest temperatures reached 95°F in June; the coolest were -10°F in January. Total precipitation for the year was 32 inches, with the wettest month being July. Snowfall for the year totaled approximately 9 inches.
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