Grayville, Illinois — City Overview

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Living in Grayville, summers are hot, with Jul highs around 87.9°F, while winters are chilly, with Feb lows around 27.7°F. Winter heating is a real budget factor — 3967 degree days means 4-5 months of meaningful energy bills. The area receives 43.4 inches of rainfall per year. Median household income: $53,977. With a 26.6% poverty rate and 67.8% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 36 over the past week.

View Grayville city guide

Updated October 12, 2026.

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