Dahlgren, Illinois — City Overview

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Living in Dahlgren, summers are hot, with Jul highs around 88.4°F, while winters are chilly, with Feb lows around 27.4°F. Winter heating is a real budget factor — 3942 degree days means 4-5 months of meaningful energy bills. The area receives 46.3 inches of rainfall per year. Within 5 miles: 1 park. For hospital care, the nearest facility is in a neighboring city. Median household income: $45,000. With a 24.9% poverty rate and 75.9% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 40 over the past week.

View Dahlgren city guide

Updated September 27, 2026.

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