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Saint Louis Weather in December
United States · early winter in Northern Hemisphere / early summer in Southern Hemisphere
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.
Holiday season. Many cities decorate beautifully. Book ahead for December travel.
Current Weather in Saint Louis Right Now
48°F
Overcast Clouds
Feels like 47°F · H 50°F / L 47°F