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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 Aug 27th 2026 12:30 AM CDT
Chicago, IL Weather – 8-27 – Sunny
83° / 64°
Sunny
It will be sunny in Chicago, with a high of 83°F and a low of 64°F. There's a very small chance of rainfall, only about 5% with an estimated 0in. Winds will be light at 8mph and gusts of 14.1mph at 5 AM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 88% at 5 AM and 32% being its lowest at 1 PM. Barometric pressure is its highest of 30.02inHg at 9 PM, a lowest point of 29.91inHg at 1 AM with an avg 29.97inHg.
Chicago, IL Weather – 8-28 – Sunny
84° / 66°

Weather Tomorrow

Sunny
In Chicago, bright and sunny conditions with highs near 84°F and lows around 66°F. There's a very small chance of rainfall, only about 4%. Winds will be light at 10mph and gusts of 18.1mph at 4 PM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 75% at 6 AM and 37% being its lowest at 2 PM. Barometric pressure is its highest of 30.15inHg at 10 PM, a lowest point of 30.02inHg at 1 AM with an avg 30.1inHg.
Chicago, IL Weather – 8-29 – Overcast
80° / 65°
Overcast
Chicago is set for overcast with temperatures peaking at 80°F and dipping to 65°F. There might be light rainfall having a 14% chance. Wind will be moderate, blowing around 11mph on average and gusts of 23.5mph at 11 PM. The humidity will be on the higher side, averaging about 64%, the maximum being 75% at 2 AM and 43% being its lowest at 5 PM. Barometric pressure is its highest of 30.15inHg at 11 AM, a lowest point of 29.99inHg at 11 PM with an avg 30.07inHg.
Chicago, IL Weather – 8-30 – Overcast
87° / 69°
Overcast
It will be overcast in Chicago, with a high of 87°F and a low of 69°F. Rainfall predicted to have a 57% chance with an estimated 0.04in. Wind will be moderate, blowing around 15mph on average and gusts of 38.1mph at 10 PM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 82% at 3 AM and 38% being its lowest at 2 PM. Barometric pressure is its highest of 30.01inHg at 4 AM, a lowest point of 29.83inHg at 7 PM with an avg 29.92inHg.
Chicago, IL Weather – 8-31 – Overcast
86° / 74°
Overcast
Skies will be overcast in Chicago, with a high of 86°F and a low of 74°F. Rainfall predicted to have a 57% chance with an estimated 0.04in. Wind will be moderate, blowing around 12mph on average and gusts of 34.3mph at 6 AM. The humidity will be on the higher side, averaging about 62%, the maximum being 76% at 10 AM and 51% being its lowest at 3 AM. Barometric pressure is its highest of 29.91inHg at 11 AM, a lowest point of 29.83inHg at 7 PM with an avg 29.86inHg.
Chicago, IL Weather – 9-1 – Scattered Showers
90° / 72°
Scattered Showers
In Chicago, on and off showers are set to occur with highs near 90°F and lows around 72°F. Rainfall predicted to have a 57% chance with an estimated 0.08in. Wind will be moderate, blowing around 12mph on average and gusts of 26.4mph at 9 AM. The humidity will be on the higher side, averaging about 71%, the maximum being 92% at 7 AM and 44% being its lowest at 1 PM. Barometric pressure is its highest of 29.89inHg at 7 AM, a lowest point of 29.81inHg at 6 PM with an avg 29.85inHg.

Currently

Partly Cloudy 68°F
29.91 inHg.
Barometer
83%
Humidity
WNW 7.2 mph
Wind
Partly Cloudy

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