Living in Chesterfield, summers are hot, with Jul highs around 86.1°F, while winters are cold — Feb lows average 23.0°F. Winter heating is a real budget factor — 4590 degree days means 4-5 months of meaningful energy bills. The area receives 47.0 inches of rainfall per year. For hospital care, the nearest facility is in a neighboring city. Median household income: $57,500. With a 25.2% poverty rate and 86.4% homeownership, the community reflects a stable residential mix. Nearby cities: Carlinville (10mi E), Gillespie (16mi SE), Jerseyville (17mi SW). Air quality is Good — avg AQI 49 over the past week.