Avg High
Chicago in October
Verdict
In Chicago, October has a distinct autumn feel. As the season moves along, temperatures are dropping quickly. You can usually expect a mild month that feels variable day to day. The atmosphere is generally mild but frequently damp, typical of changeable seasons.
It suits travellers who want straightforward weather for sightseeing and day trips. Lookouts and coastal walks can feel sharper when the wind is up.
Avg Low
Rain
Daylight
11h
What to expect
- Daytime feel - Mild days with a gentle drop-off once the sun goes down. It can feel cooler than the thermometer suggests.
- Showers & dry spells - Frequent rain spells. Expect damp surfaces and slick paths. Outdoor plans benefit from flexibility.
- Midday sun - Moderate sun. You'll feel fine, but it's still easy to get caught out. This is a 'don't forget the hat' month.
- Breezes - Refreshing breezes, and umbrellas and loose items can struggle on gustier days. On the water or higher ground it feels stronger.
October in context
How it compares to the rest of the year in Chicago.
Hottest (avg)
#6 / 12
Wettest (avg)
#6 / 12
Daylight Hours
#8 / 12
Windiest (avg)
#6 / 12
Highest UV
#8 / 12
Most Humid
#12 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 11.1 hours
- UV index (max)
- 5
- Typical sun hours
- 06:04 – 17:07
Rain & Snow
- Total
-
- Rainy days
- 12
- Cloud cover
- 56%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 70%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is October a good time to visit Chicago?
Typical October days in Chicago reach highs of 16°C (61°F) with nights around 9°C (48°F). It usually feels mild by day and cool after dark. Overall, October sits in the middle of the Chicago climate range.
What are temperatures like in October?
Daytime temperatures in October typically peak near 16°C (61°F), while nights drop to around 9°C (48°F). Expect mild afternoons and cool evenings.
How much does it rain in October?
Rainfall in October averages 91 mm (3.6 in) across roughly 12 days. Overall it is a quite rainy time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in October?
You can expect about 11 hours of daylight in October. Sunrise is typically around 06:04 and sunset near 17:07. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in October?
UV levels are moderate (around 5); sunscreen and sunglasses are still a good idea.
Is it windy in October?
In October, average wind speeds are around 17 km/h (11 mph), with gusts on the windiest days reaching about 58 km/h (36 mph). On the ground, it is it can feel quite windy at times, particularly when weather systems move through.