Weather in Chicago in October 2024
Average weather
Average temperature in Chicago in October
Going from a maximum of +79°F during the day to a minimum of +34°F during the night, the temperature in October averages around +63°F.
The average maximum temperature goes down 16% by the end of the month, compared with the beginning of the month, from +64°F to +57°F.
Is Chicago warm or cold in October?
Chicago is typically mild in October.
Maximum temperatures go down compared to the previous month from +73°F to +61°F. The minimum temperature also goes down from +61°F to +50°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how October is compared to other months in Chicago:
Climate in Chicago in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +73°F | +61°F | +48°F | ||||
| Min. temperature | ||||||
| +41°F | +28°F | +9°F | ||||
| Max. temperature | ||||||
| +97°F | +88°F | +75°F | ||||
| Rainfall | ||||||
| 72 mm | 79 mm | 70 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 4 m/s | ||||
| Humidity | ||||||
| 67% | 66% | 68% | ||||
| Air pressure | ||||||
| 1016 HPa | 1016 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 7 | 6 | 4 | ||||
| Cloudy days | ||||||
| 16 | 18 | 19 | ||||
| Rainy days | ||||||
| 7 | 7 | 6 | ||||
| Snowy days | ||||||
| 0 | 0 | 1 | ||||
October weather is still as good as in September. It’s getting colder in October. From +73°F in the day, the average maximum temperature lowers to +61°F. Prepare for more rain. Average rainfall goes from 72 mm to 79 mm. It feels drier, as humidity decreases from 67% to 66%. The average wind speed doesn’t change much during October, staying around 3 m/s. The days becoming less sunny, going from 7 sunny days in September to 6 in October.
Next month (November) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Chicago is gradually decreasing during October, going from 2 m/s to 1 m/s over the course of the month.
Rain
How was the weather last October in Chicago?
Climate Change Over the Years
The climate in Chicago in October has not changed that much over the last 43 years.
The average temperature was the lowest in 1988 (+57°F) and the highest in 2007 (+71°F). The driest year was 2005 with only 26 mm of rainfall, and the wettest year was 2021 with 326 mm.
FAQ
Is October a good time to visit Chicago?
Can you sunbathe in Chicago in October?
Is Chicago rainy in October?
Is it sunny in Chicago in October?
Other cities in USA
Monthly weather in Chicago
Source of the data
For this page, we’ve looked at the typical weather in Chicago, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.