St. Louis Weather In December

The highest recorded temperature for St. Louis Missouri for the past 48 years in December was 76°F, and the normal high is 42°F. The lowest documented temperature in December for St. Louis for the past 48 years was -16°F, while the average low temperature is 25.8°F.

St. Louis typically receives an average of 2.86 inches of rain during the month and receives an average of 4 inches of snow.