❮
Today Hourly 7 days 30 days September
❯

September 2026 Weather | Chicago, Illinois

Today 9/14
Cloudy Weather
Day 73°
Night 66°
2
Tue 9/15
Sunny with a Chance of Thunderstorms
Day 79°
Night 70°
96
Wed 9/16
Sunny with a Chance of Thunderstorms
Day 72°
Night 70°
95
Thu 9/17
Cloudy Weather
Day 75°
Night 66°
30
Fri 9/18
Cloudy Weather
Day 75°
Night 68°
18
Sat 9/19
Rainy Weather
Day 77°
Night 66°
60
Sun 9/20
Cloudy Weather
Day 73°
Night 64°
25
Mon 9/21
Partly Sunny with Showers
Day 72°
Night 64°
57
Tue 9/22
Cloudy Weather
Day 70°
Night 63°
1
Wed 9/23
Sunny Weather
Day 68°
Night 63°
1
Thu 9/24
Rainy Weather
Day 70°
Night 63°
55
Fri 9/25
Cloudy Weather
Day 72°
Night 61°
55
Sat 9/26
Cloudy Weather
Day 70°
Night 63°
4
Sun 9/27
Cloudy Weather
Day 75°
Night 63°
25
Mon 9/28
Cloudy Weather
Day 73°
Night 63°
25
Tue 9/29
Cloudy Weather
Day 73°
Night 63°
Wed 9/30
Cloudy Weather
Day 73°
Night 63°

Explore U.S. Weather Trends

❄️ Coldest Cities in the U.S. – Live Temperature Rankings 🔥 Hottest Cities Today – Real-Time Heat Observations ⚠️ Active Weather Alerts – Warnings, Watches & Advisories 🌪️ Windiest Cities – Highest Sustained Wind Speeds 🌫️ Worst Air Quality – Cities with the Highest AQI 🍃 Best Air Quality – Cities with the Lowest AQI