Winter Weather Advisory is in effect through 6 AM Wednesday.
This Evening: 30s. Snow and Sleet will spread from south to north across the area this evening. Snow/Sleet may be heavy at times. Through Midnight a quick 1" to 2", perhaps a few spots up to 3" of snow, however if we see more sleet than snow expect much lower totals. Then late evening to near Midnight, a glaze of ice is possible from freezing drizzle.
The bulk of accumulation will occur for the St. Louis Metro area before midnight.
Overnight: 30s. Temperatures are expected to bottom out just below freezing around midnight and then slowly climb above freezing for the early morning commute. Light drizzle will continue overnight which may freeze on untreated surfaces before temperatures climb above freezing well before sunrise. Most icy spots should turn wet across the metro for the morning drive.
Wednesday: 44. Some drizzle mainly early in the day. Warmer. Wind: Southwest 4-8 mph.