Chicago, United States
Weather by months in Chicago
January
February
March
April
May
June
July
August
September
October
November
December
24ºC
Avg. daily temperature
30ºC
High
10ºC
Low
70 mm
Total precipitation
70%
Avg. humidity
5m/s
Avg. wind
12 
Sunny days
8 
Cloudy days
6 
Rainy days
Air temperature
September
The temperature is between 15 and 23 degrees Celsius.
Low15º23ºHigh
1.9The temperature is between 16 and 24 degrees Celsius.
Low16º24ºHigh
4.9The temperature is between 17 and 25 degrees Celsius.
Low17º25ºHigh
7.9The temperature is between 18 and 26 degrees Celsius.
Low18º26ºHigh
10.9The temperature is between 19 and 27 degrees Celsius.
Low19º27ºHigh
13.9The temperature is between 18 and 26 degrees Celsius.
Low18º26ºHigh
16.9The temperature is between 17 and 25 degrees Celsius.
Low17º25ºHigh
18.9The temperature is between 16 and 24 degrees Celsius.
Low16º24ºHigh
20.9The temperature is between 17 and 25 degrees Celsius.
Low17º25ºHigh
22.9The temperature is between 18 and 26 degrees Celsius.
Low18º26ºHigh
24.9The temperature is between 19 and 27 degrees Celsius.
Low19º27ºHigh
26.9The temperature is between 20 and 28 degrees Celsius.
Low20º28ºHigh
28.9In Chicago, September experiences a maximum daytime temperature of around 30ºC and a minimum nighttime temperature of 10ºC. The average daily high is about 24ºC, while the average nightly low hovers around 14ºC. As temperatures start to drop, enjoy visiting the fall festivals or taking a leisurely bike ride along the lakefront trails.
