Data source: Meteostat・Last updated: 2025-09
Spring (March–May): Average 5.5–18.4°C, the climate transitions from cold to warm, with more rainfall, but occasional warm sunshine. Common activities: Visiting museums, art galleries, and strolling through Millennium Park. Recommended clothing: Jacket, comfortable shoes, layers for temperature regulation.
Summer (June–August): Average 23.4–24.7°C, the climate is hot and humid, with significant rainfall, especially in July. Common activities: Swimming and boating on the lake, exploring Chicago's parks and neighborhoods, attending outdoor concerts. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 14.4–21.2°C, the climate is cool and comfortable, with decreased rainfall. Colorful autumn leaves are a feature of Chicago's autumn. Common activities: Viewing autumn leaves, touring Chicago's historic neighborhoods, enjoying autumnal cuisine. Recommended clothing: Light jacket, comfortable shoes.
Winter (December–February): Average -2.3–1.6°C, the climate is cold, with alternating snowfall and rainfall. Common activities: Visiting indoor museums and art galleries, ice skating, enjoying cozy indoor activities. Recommended clothing: Heavy warm coat, scarf, hat, gloves, thermal underwear.
Annual average temperature: approx. 12.6°C / Annual rainfall: approx. 1003 mm / Summer humidity: 60%–80% / Rainiest month: July
| Month | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature | -2.3°C | 1.5°C | 5.5°C | 11.2°C | 18.4°C | 23.4°C | 24.7°C | 24.2°C | 21.2°C | 14.4°C | 7.3°C | 1.6°C |
| Rainfall (mm) | 56.2 | 75.1 | 100.1 | 85.5 | 79 | 65.8 | 211.6 | 89.8 | 65.6 | 59 | 46.1 | 69.4 |
| Date | 11/7Saturday | 11/8Sunday | 11/9Monday | 11/10Tuesday | 11/11Wednesday | 11/12Thursday | 11/13Friday |
|---|---|---|---|---|---|---|---|
| Weather | Sunny | Sunny | Sunny | Sunny | Overcast | Light rain shower | Light sleet showers |
| High | 11°C | 15.1°C | 14.9°C | 14.6°C | 12.4°C | 9.5°C | 5.4°C |
| Low | 4.5°C | 6.3°C | 7.1°C | 10°C | 9°C | 5.5°C | 3.9°C |