Glenarm, Illinois — City Overview

Living in Glenarm, summers are warm, peaking at 84.9°F in Jul, while winters are cold — Feb lows average 22.1°F. Winter heating is a real budget factor — 4756 degree days means 4-5 months of meaningful energy bills. The area receives 43.8 inches of rainfall per year. Median household income: $92,002. With a 7.4% poverty rate and 66.5% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 39 over the past week.

View Glenarm city guide

Updated October 12, 2026.

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