Chicago/ Weather & Environment

Labor Day Stunner: Chicago Basks in Sun Before Midweek Storms Roar Back

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Published on September 07, 2026
Labor Day Stunner: Chicago Basks in Sun Before Midweek Storms Roar BackSource: X/NWS Chicago

Chicago is starting Labor Day with clear skies, temperatures in the upper 60s and a welcome break from the recent heat-and-storms routine. The city should stay sunny and dry Monday, with an afternoon high near 76 degrees and a light east wind.

Sunny Holiday Weather Gives Way To Tuesday Heat

Monday night will be partly cloudy with a low around 66, setting up a noticeably warmer Tuesday. The forecast calls for partly sunny skies and a high near 86 degrees, with south winds of 5 to 10 mph. That is a quick jump from the cooler lakefront feel expected Monday.

The latest outlook is a meaningful update from Sunday’s forecast, which had pointed to a similar holiday cooldown but less detail on the stronger midweek storm window. The National Weather Service Chicago/Romeoville now expects rain chances to increase late Tuesday night and Wednesday.

Storm Chances Rise Tuesday Night And Wednesday

A 30% chance of showers arrives after 1 a.m. Wednesday, with a chance of thunderstorms developing overnight. Wednesday brings the week’s wettest forecast, with showers and thunderstorms likely, a 70% chance of precipitation and a high near 84 degrees. Southwesterly winds may reach 10 to 15 mph.

Cooler, Calmer Weather Returns Thursday

Conditions should improve Wednesday night, when only a slight chance of a shower or thunderstorm remains before skies turn partly cloudy. Thursday looks mostly sunny and cooler, with a high near 77 and a low around 62 Thursday night. Friday rebounds to about 81 degrees under sunny skies, while slight storm chances return at times over the weekend.