Bourbonnais is a city of approximately 18,600 people in Illinois, United States. Located in the Central Time Zone at 41.2°N latitude.
In 2025, Bourbonnais recorded an average annual temperature of 52°F. The hottest temperatures reached 90°F in July; the coolest were -8°F in January. Total precipitation for the year was 33 inches, with the wettest month being July. Snowfall for the year totaled approximately 10 inches.
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