Frederick, Illinois — City Overview

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Living in Frederick, summers are hot, with Jul highs around 86.1°F, while winters are cold — Feb lows average 20.7°F. Winter heating is a real budget factor — 4953 degree days means 4-5 months of meaningful energy bills. The area receives 42.4 inches of rainfall per year. Within 5 miles: 5 parks and 5 schools. For hospital care, the nearest facility is in a neighboring city. Air quality is Good — avg AQI 34 over the past week.

View Frederick city guide

Updated October 09, 2026.

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