🇺🇸 Saint Louis vs 🇺🇸 Chicago
Weather Comparison
Current Weather Right Now
🇺🇸
Saint Louis
60°F
Clear Sky
Feels like 58°F
H 62°F / L 57°F
Humidity: 40%
🇺🇸
Chicago
52°F
Few Clouds
Feels like 49°F
H 54°F / L 51°F
Humidity: 39%
Climate Overview
Saint Louis
St. Louis at the confluence of the Missouri and Mississippi Rivers has one of America's most oppressive summer climates. The rivers converge here creating maximum humidity, and the city sits in a bowl that traps heat. The 2012 heat wave killed many here, and the Gateway Arch's stainless steel surface is so thermally conductive it can be felt at distance on hot days.
Chicago
Humid continental — cold harsh winters, hot humid summers, severe storms
Chicago lives up to its Windy City nickname. Lake Michigan creates its own microclimate — cooler summers and heavier lake-effect snow in winter. Summers are warm but brief; winters are among the harshest of any major American city.
Seasonal Comparison
| Season | 🇺🇸 Saint Louis | 🇺🇸 Chicago |
|---|---|---|
| Spring | — | 35–65°F March–May |
| Summer | — | 70–84°F June–August |
| Fall | — | 45–68°F September–November |
| Winter | — | 17–32°F December–February |
Saint Louis vs Chicago: Frequently Asked Questions
Does Saint Louis or Chicago have better weather?
Saint Louis and Chicago have very different climates. St. Louis at the confluence of the Missouri and Mississippi Rivers has one of America's most oppress Chicago: Humid continental — cold harsh winters, hot humid summers, severe storms. The best city depends on your preferred season and temperature range.
When is the best time to visit Saint Louis vs Chicago?
Best time for Saint Louis: spring and fall. Best time for Chicago: May, June, September.