This week, Chicago’s skies will dance between sunlit days and stormy evenings. Stay updated as we guide you through these seasonal shifts and their impacts on your daily plans.

Welcome to your ultimate guide to Chicago’s weekly weather forecast! Experience the harmony of partly sunny skies today with a pleasant 78°F that slightly dips as thunderstorms roll in by dusk. The week offers varied conditions from clear skies to potential showers, ensuring every Chicagoan needs to keep an eye on the sky. Beware of the UV index, especially for prolonged outdoor activities. Brace yourself for a fast-moving cold front that promises a dramatic shift midweek, and enjoy the cooling relief it brings forth. Detailed forecasts inside for every day of the week, making sure you’re always ready, rain or shine! On the Regional Radar, widespread rain stretches from Fort Wayne to Columbus, with heavier pockets near Columbus. Showers are moving east through Indianapolis and Louisville, bringing consistent rainfall. The heaviest rain remains concentrated from Cleveland to Charleston, whereas areas like Chicago and Des Moines are enjoying clear skies. Saginaw sees some cloud cover, but remains dry for now.
Chicago’s afternoon brings a warm mix of sun and clouds with temperatures climbing to 78 degrees. Be prepared for a shift as scattered thunderstorms develop by 6 PM, dropping the temperature slightly to 77 degrees with winds from the west at 14 miles per hour. As we move into the evening, expect the skies to become mostly cloudy, with temperatures decreasing to 72 degrees and winds shifting to the west-southwest at 10 miles per hour.
This afternoon’s high temperatures across the Midwest show a warm pattern taking shape. In St. Louis, we’re looking at a high of 86 degrees, while Kansas City is a bit cooler at 81. Indianapolis reaches a pleasant 79 degrees, and Peoria matches that with 81. Notably, Fort Wayne will see a cooler high of 77, and Cleveland is on the chillier side at 69 degrees.
Tonight, low temperatures in the Midwest will see Chicago at 56 degrees and Fort Wayne dropping to 55. Indianapolis will also experience a low of 56, while Des Moines cools down to 54 degrees. Kansas City will remain slightly warmer at 58 degrees, and St. Louis will drop to 57. Expect a mild night overall across the region, with no freezing temperatures in the forecasts.
Tomorrow, Kansas City is looking at a high of 81 degrees, while St. Louis will reach 82. In Chicagoland, expect a comfortable 76, with nearby Peoria slightly warmer at 77. Indianapolis will see a high of 77, and Louisville will hit 74. Cleveland lags behind with a cooler 67, reflecting below-average temperatures for this time of year, while Charleston tops the charts at 84 degrees, indicating a notable warm front influencing the region.
A fast-moving cold front will sweep through the Midwest tomorrow, bringing scattered thunderstorms from Des Moines to Detroit. Expect potential for severe storms with gusty winds and localized downpours, especially in Indianapolis and Fort Wayne by late afternoon. Temperatures will drop significantly after the frontal passage, leading to cooler, drier air settling in through Wednesday. Parts of Missouri and Illinois could see over an inch of rain causing localized flooding, so stay alert by the waterways. As the system exits, high pressure builds, offering drier and cooler conditions across the region just in time for midweek activities.
Chicago’s UV index today is very high at 9, with potential sun exposure risks leading to a burn in about 15 minutes. On Monday, the index remains strong at 8, so expect a burn time of approximately 17 minutes.