Boulder Hill, in Illinois, United States, is home to roughly 8,100 people in the Central Time Zone at 41.7°N latitude.
Across a typical year Boulder Hill sees about 34 inches of precipitation, with May the wettest month and January the driest. Temperatures range from January lows near 15°F up to July highs around 84°F, averaging 49°F annually — characteristic of a humid continental climate.
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