St. Louis, MO – Low clouds hang heavy across the Gateway City this morning, muting the sunrise over damp pavement and calm streets. Light sprinkles could linger through late morning, followed by a stretch of mild December air before a colder system brings a rain–snow mix by midweek.
According to the National Weather Service in St. Louis, temperatures will hover near 40°F today with occasional drizzle. Monday turns drier as skies clear slightly, climbing into the mid-30s to low 40s, while Tuesday’s sunshine pushes readings into the 50s — likely the warmest day of the week.
But by late Wednesday, another fast-moving cold front sweeps across eastern Missouri and southern Illinois, bringing a chance of rain changing to snow. Accumulations look light and scattered, but slick roads and reduced visibility could develop after sunset, especially along Interstate 70 and I-64.
Forecasters note a broader shift toward colder, stormier weather across the Midwest after December 11, with potential for lake-effect snow and freezing conditions into the following weekend. Residents are urged to keep winter gear ready and check in on those without heat as temperatures dip back into the 20s.
5-Day St. Louis, MO Outlook
- Sunday: Cloudy with light sprinkles, high 40°F, low 23°F.
- Monday: Partly sunny, high 34°F, low 27°F.
- Tuesday: Mostly sunny, high 53°F, low 42°F.
- Wednesday: Rain-to-snow chance late, high 49°F, low 29°F.
- Thursday: Colder, partly cloudy, high 38°F, low 18°F.
