Dover, Illinois — City Overview

Living in Dover, summers are warm, peaking at 83.8°F in Jul, while winters are cold — Jan lows average 17.0°F. Winter heating is a real budget factor — 5769 degree days means 4-5 months of meaningful energy bills. The area receives 42.3 inches of rainfall per year. Median household income: $64,464. With a 4.0% poverty rate and 83.1% homeownership, the community reflects a stable residential mix. Nearby cities: Princeton (6mi SW), Hennepin (13mi S), Spring Valley (13mi SE). Air quality is Good — avg AQI 43 over the past week.

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Updated October 01, 2026.

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