Chicago weather in October
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Chicago October weather at a glance
In October, Chicago averages 14.4°C, with typical highs of 18.7°C and lows of 10.3°C. The historical average is 6 wet days and 66% humidity.
Chicago October temperature & humidity
Chicago October rain & wet days
Pack a compact umbrella. Keep an indoor stop available between outdoor activities.
What to wear in Chicago in October
T-shirts or long sleeves with one light outer layer should be comfortable.
- DaytimeLong sleeves and a light jacket · average high 18.7°C
- Morning & eveningLong sleeves with a jacket or cardigan · average low 10.3°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Chicago October sunrise & sunset times
2026 October · Local time (America/Chicago)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-10-01 | 06:48 | 18:32 | 11h 44m |
| 2026-10-15 | 07:03 | 18:09 | 11h 6m |
| 2026-10-31 | 07:22 | 17:46 | 10h 24m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
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Best months to visit Chicago
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
October weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Chicago weather like in October?
In October, Chicago averages 14.4°C, with typical highs of 18.7°C and lows of 10.3°C. The historical average is 6 wet days and 66% humidity. Our weather-comfort rating for this month is excellent.
Does it rain a lot in Chicago in October?
There are about 6 wet days in October. A compact umbrella is still useful.
What should I wear in Chicago in October?
T-shirts or long sleeves with one light outer layer should be comfortable.
What are the best months to visit Chicago?
Recent weather data rates May, June, August, September among the more comfortable months.
Where can I check Chicago weather in October in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Chicago in October?
On 2026-10-15, calculated sunrise is 07:03 and sunset is 18:09 in local time (America/Chicago). Times vary by date and terrain.
Chicago weather by month
More Americas destinations in October
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations