Saint Joseph, in Illinois, United States, is home to roughly 4,000 people in the Central Time Zone at 40.1°N latitude.
Saint Joseph has a humid continental climate. Average annual temperature is 53°F, with January lows around 18°F and July highs near 85°F. The city averages 37 inches of precipitation per year. The wettest month is typically May; the driest is February.
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