Todays weather in Chicago · 21 May 2026 · 2 min

Todays weather in Chicago - Thursday - 21 May 2026

Chicago hits its coldest morning in weeks this Thursday, running ten degrees below normal for mid-May with biting winds and active Lake Michigan beach hazards. Get the full forecast — what to wear, commute conditions, and when the weekend warmup finally arrives.

Todays weather in Chicago
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Todays weather in Chicago - Thursday - 21 May 2026

Audio is available on Spreaker — see link below.

What's covered

Coldest Morning in Weeks

Chicago. It's the coldest morning you've had in weeks, and it's mid-May.

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What to Wear Thursday

Here's the practical read. This is not a light jacket morning.

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Lake Michigan Beach Hazards

Stay off the lakefront. Beach hazards are active along Lake Michigan right now, and that's not a casual advisory.

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Cold Snap Through Friday

Wednesday was already rough, and Thursday carries that right through. This whole midweek stretch has been unseasonably cold, with the kind of day-to-day swings that late spring in this city is genuinely capable of.

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Weekend Warmup and Sunday Rain

And flip it will. By Sunday, temperatures are expected to jump to around twenty-four degrees Celsius.

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Thursday Takeaway

Chicago. Bundle up this morning, and don't let the calendar fool you.

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