Forreston, Illinois — City Overview

Living in Forreston, summers are warm, peaking at 83.5°F in Jul, while winters are cold — Feb lows average 14.5°F. At 6234 heating degree days per year, winter energy bills are significant. With 38.2 inches annually, the climate is relatively dry. Median household income: $65,179. With a 5.5% poverty rate and 85.1% homeownership, the community reflects a stable residential mix. Nearby cities: Freeport (12mi N), Oregon (15mi SE), Dixon (20mi S). Air quality is Good — avg AQI 34 over the past week.

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Updated October 05, 2026.

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