National Weather Service United States Department of Commerce

A cold front moved across the area overnight, bringing an end to the recent stretch of above normal temperatures. It will be noticeably cooler today with temperatures in the 30s. Tonight will be seasonably cold with lows in the teens. Clouds will be on the increase on Saturday with highs once again in the 30s.
We are watching two periods of the forecast for the potential of winter weather and travel impacts. The first is Saturday night into Sunday morning when a wintry mix of freezing rain, sleet and snow is likely to occur across the northern and eastern portions of Missouri and almost all of Illinois. While the precipitation is not expected to be very heavy, it will only take a small amount of winter weather to produce hazardous driving conditions. Temperatures will warm on Sunday with all of the precipitation transitioning to rain across the area. The second period that we are monitoring is Monday afternoon and evening as colder air begins to move into the region, which could transition the rain to snow before it ends late on Monday. There is still quite a bit of variability in the forecast for early next week, but those with travel plans across northern Missouri and Illinois should monitor the latest forecasts over the weekend.