Weather · Saint Louis, United States
Saint Louis Weather in December
December in Saint Louis averages 4°C by day and -2°C at night, with about 47mm of rain. That makes it not the easiest month, weather-wise.
Avg high
4°C
39°F
Avg low
-2°C
28°F
Rainfall
47mm
#9 wettest of 12
What to pack
Warm layers and a proper coat. Rain is unlikely to interrupt your plans.
Timing a trip around the weather? A Local Friend in Saint Louis builds it around the season for you.