October 2026 Weather Calendar Chicago Unbelievable. Weather.com brings you the most accurate monthly weather forecast for chicago, il, united states with average/record and high/low temperatures,. Get the monthly weather forecast for chicago, il, including daily high/low, historical averages, to help you plan ahead.

Weather.com brings you the most accurate monthly weather forecast for chicago, il with average/record and high/low temperatures, precipitation and more. October normals for temperature, precipitation and snowfall for chicago, il weather.gov > chicago, il > october normals for. 32 rows october 2026 calendar.