Johnston City is a city of approximately 3,500 people in Illinois, United States. Located in the Central Time Zone at 37.8°N latitude.
Expect a humid continental climate in Johnston City: average highs of 88°F in midsummer, lows near 25°F in midwinter, and an annual mean of 56°F. Precipitation totals roughly 44 inches per year, concentrated around April, with February typically the driest month.
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