Tonight: Low 21. Snow showers Friday morning to early afternoon will be rather widespread, although heavier south of the St. Louis metro. Most of the metro snowfall on Friday will come between 6AM and 1PM. If the system shifts farther north than expected, there will be heavier snowfall in the metro, so this will be one storm to check back for updates. But travel South and Southeast of St. Louis will be treacherous. Winds North 10 mph, Wind chill near 10.
Friday Afternoon: High 25. The heaviest snow is in the morning to early afternoon, so expect the snow to become lighter in the afternoon and end as a few flurries in the afternoon. Wind: N 10-15 MPH. Wind chill: teens.
Total snowfall in St. Louis of 2"-4” with lower totals on the north side of the metro and heavier totals on the south side of the metro. The heaviest snow will be in a band near Farmington, MO to Centralia, IL to near Salem, IL with 7-10". Here's a map of where the heaviest snow will fall, click here.
Saturday: Low 11/High 25. Sunny but prepare for a cold day, more like a January chill. Northeast wind 5-10 mph.
Sunday: Low 17/High 28. Another shot of winter weather is possible on Sunday. A chance for more snow/sleet and possibly freezing rain in some areas. Cold and becoming cloudy. east/southeast wind 5-10 mph.