Chicago/ Weather & Environment

Sunny Sunday Shines On Chicago

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Published on September 27, 2026
Sunny Sunday Shines On ChicagoSource: Google Street View

Chicago is starting Sunday, September 27, with a light northeasterly breeze. Sunday is expected to be mostly sunny, with highs in the upper 60s. That should offer a solid window for anyone hoping to stretch the weekend outdoors.

The National Weather Service Chicago/Romeoville office is the NWS office for Chicago. Light northeasterly winds are expected Sunday. No watches, warnings or advisories are in effect for the Chicago area.

Sunny Sunday Leads Into A Mild Monday

Monday should be mostly sunny and seasonable, reaching about 69 degrees, with a low around 57.

Tuesday's high is forecast to reach about 74.

Midweek Forecast

Wednesday's high is forecast near 67.

Friday is expected to be mostly cloudy, with highs in the upper 60s and a 40% chance of showers.