St. Louis, Missouri – A sharp temperature drop by early Sunday could set the stage for snow or ice to impact I-44 and I-64 late Sunday night, with travel disruptions possible before the Monday morning commute. Anyone with plans on the roads should prepare now for changing conditions within a short window.
According to the National Weather Service in St. Louis, a strong cold front will sweep across eastern Missouri by early Sunday, pulling much colder air into the region. Confidence is increasing, with an 80 to 90 percent chance of wintry precipitation developing late Sunday and continuing into early Monday. Exact precipitation types and amounts remain uncertain, but the signal for impactful weather is strengthening.
Communities from Columbia along I-70 to Jefferson City and east toward St. Louis could see rain transition to snow or a wintry mix as temperatures fall. Along US-50 and I-44 near Rolla, rapidly cooling pavement temperatures may allow slick spots to form overnight. In Farmington and along US-67, bridges and elevated roadways would freeze first if moisture lingers.
Missouri Department of Transportation crews will likely monitor conditions closely as colder air deepens. Drivers should check vehicle readiness, allow extra travel time late Sunday, and watch for updated advisories. Even light precipitation can create hazardous conditions when temperatures drop quickly.
More details on timing and accumulation will become clearer over the next 24 to 48 hours. Additional watches or advisories could be issued as confidence in impacts increases heading into late Sunday night and Monday morning.
