With a population of around 5,400, Eureka sits in Illinois, United States. The city operates in the Central Time Zone.
Across a typical year Eureka sees about 38 inches of precipitation and 26 inches of snow, with May the wettest month and February the driest. Temperatures range from January lows near 18°F up to July highs around 86°F, averaging 53°F annually — characteristic of a humid continental climate.
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