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Chicago, IL Weather Tomorrow

Before heading out, check tomorrow's Chicago weather and the extended 5 day forecast featuring precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction across the Chicago area and around Cook county, Illinois.
Updated: Thu Sep 24th 2026 7:00 AM CDT
Chicago, IL Weather – 9-24 – Overcast
65° / 58°
Overcast
Daytime highs will reach 65°F with lows dropping to 58°F in Chicago, where skies will be overcast. There might be light rainfall having a 18% chance with an estimated 0in. Wind will be moderate, blowing around 13mph on average and gusts of 18.6mph at 11 PM. The humidity will be on the higher side, averaging about 70%, the maximum being 77% at 7 PM and 67% being its lowest at 12 PM. Barometric pressure is its highest of 30.33inHg at 10 AM, a lowest point of 30.26inHg at 3 PM with an avg 30.29inHg.
Chicago, IL Weather – 9-25 – Overcast
61° / 58°

Weather Tomorrow

Overcast
In Chicago, cloud-filled skies are likely with a high near 61°F and a low around 58°F. There might be light rainfall having a 14% chance. Wind will be moderate, blowing around 11mph on average and gusts of 18.8mph at 12 AM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 63% at 11 PM and 52% being its lowest at 5 PM. Barometric pressure is its highest of 30.31inHg at 10 AM, a lowest point of 30.23inHg at 5 PM with an avg 30.26inHg.
Chicago, IL Weather – 9-26 – Overcast
64° / 56°
Overcast
In Chicago, skies will be overcast with highs near 64°F and lows around 56°F. There's a very small chance of rainfall, only about 8%. Winds will be light at 9mph and gusts of 18.8mph at 4 PM. The humidity will be on the higher side, averaging about 61%, the maximum being 75% at 1 AM and 51% being its lowest at 3 PM. Barometric pressure is its highest of 30.24inHg at 11 AM, a lowest point of 30.13inHg at 5 PM with an avg 30.19inHg.
Chicago, IL Weather – 9-27 – Overcast
65° / 59°
Overcast
It will be overcast in Chicago, with a high of 65°F and a low of 59°F. There's a very small chance of rainfall, only about 10%. Winds will be light at 7mph and gusts of 15.9mph at 4 PM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 65% at 12 AM and 46% being its lowest at 3 PM. Barometric pressure is its highest of 30.15inHg at 1 AM, a lowest point of 30.08inHg at 5 PM with an avg 30.12inHg.
Chicago, IL Weather – 9-28 – Sunny
66° / 60°
Sunny
In Chicago, bright and sunny conditions with highs near 66°F and lows around 60°F. There's a very small chance of rainfall, only about 6%. Winds will be light at 9mph and gusts of 15mph at 2 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 78% at 5 AM and 50% being its lowest at 1 PM. Barometric pressure is its highest of 30.1inHg at 10 AM, a lowest point of 30inHg at 5 PM with an avg 30.05inHg.
Chicago, IL Weather – 9-29 – Overcast
74° / 59°
Overcast
Chicago is set for overcast with temperatures peaking at 74°F and dipping to 59°F. There's a very small chance of rainfall, only about 10%. Wind will be moderate, blowing around 18mph on average and gusts of 37.6mph at 10 PM. Humidity levels should be comfortable, sitting around 55% on average, the maximum being 74% at 7 AM and 42% being its lowest at 2 PM. Barometric pressure is its highest of 30inHg at 12 AM, a lowest point of 29.71inHg at 11 PM with an avg 29.89inHg.

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