Saint Jacob is a city of approximately 1,100 people in Illinois, United States. Located in the Central Time Zone at 38.7°N latitude.
Saint Jacob has a humid continental climate. Average annual temperature is 58°F, with January lows around 24°F and July highs near 90°F. The city averages 43 inches of precipitation and 11 inches of snow per year. The wettest month is typically May; the driest is February.
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