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Chicago Weather in September, USA

CHICAGO AVERAGES FOR SEPTEMBER

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Chicago Averages September

  • What is Average Temperature?
    The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

    Temperature

    18°C
    64°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    High Temperature

    24°C
    75°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    Low Temperature

    12°C
    54°F
  • What is Average Day Temperature?
    The average temperature recorded between sunrise and sunset

    Day Temperature

    22°C
    72°F
  • What is Average Night Temperature?
    The average temperature recorded between sunset and sunrise

    Night Temperature

    19°C
    67°F
  • What are Average Daily Sunshine Hours?
    Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer

    Sunshine Hours

    9 hours
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall Days

    10 days
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall

    90 mm

Chicago Daily Averages September

September, 2024

Sun
1 Avg 24º 75º
Mon
2 Avg 24º 75º
Tue
3 Avg 24º 75º
Wed
4 Avg 24º 75º
Thu
5 Avg 24º 75º
Fri
6 Avg 24º 75º
Sat
7 Avg 22º 72º
8 Avg 23º 73º
9 Avg 20º 68º
10 Avg 20º 68º
11 Avg 20º 68º
12 Avg 20º 68º
13 Avg 19º 66º
14 Avg 19º 66º
15 Avg 20º 68º
16 Avg 22º 72º
17 Avg 22º 72º
18 Avg 20º 68º
19 Avg 20º 68º
20 Avg 22º 72º
21 Avg 20º 68º
22 Avg 19º 66º
23 Avg 20º 68º
24 Avg 19º 66º
25 Avg 21º 70º
26 Avg 21º 70º
27 Avg 18º 64º
28 Avg 18º 64º
29 Avg 17º 63º
30 Avg 16º 61º
Forecast
Avg Historical Daily Average

What's the Weather Like in Chicago in September

September in Chicago is autumn in the city, which means the weather is still pleasant but more mild than it is during the summer. The milder temperatures also mean that the tourists tend to empty out of the city in this month, so it is a perfect time to enjoy sight seeing without the excessive crowds and queues.

It would be advisable to carry with you a warmer jacket or jumper, though, as the evenings especially can get quite cool.

Temperature
The average daily temperature for Chicago in September is still warm at 24°C, but this can still drop down to 12°C on average.

Sunshine
The long, hot days of summer are getting shorter in September, with an average of 8 hours of sun per day in September.

Rain
The average rainfall experienced in Chicago during this month drops to 90 mm throughout the month on average.
 

Things to do in Chicago in September

National Football League
Football season kicks off again in September, with both the National Football League and College Football seasons starting in this month in Chicago.

SuperSibs Golf Classic
As well as this, September sees SuperSibs Golf Classic, which is a day of golf, drinks, dinner and an auction in aid of children with cancer.

Chicago Jazz Festival 
It is also the month that the world's largest jazz festival comes to town, with the Chicago Jazz Festival featuring jazz musicians from all over the world. Entry is free for any jazz lovers that want to attend this.

County Fair
There is also the County Fair, that holds all the fun of the fair, with pie eating contests, home made goods on sale, face painting, live music, pony rides and garden demonstrations.

Mexican Independance Day
Mexican Independence Day is celebrated with the 26th Street Mexican Independence Day Parade, with the chance to purchase Mexican food and merchandise.