Highs today ran 31-35 over the viewing area:
Patchy freezing fog, some freezing drizzle & mixed snow & snow pellet showers are possible tonight with lows in the upper 20s.
Watch for a few slick spots in the morning, even if the pavement just looks damp or wet.
Some scattered snow showers are possible Tuesday afternoon. I cannot completely rule out localized dustings of less than 0.5".
Highs will run in the low to mid 30s.
A few snow showers & flurries are possible Wednesday with highs in the 30s after some patchy freezing fog & upper 20s in the morning.
An area of 1-3" snow may occur from soutehrn Missouri to western Kentucky.
After some patchy freezing fog in the morning, Thursday looks to have a mostly cloudy to cloudy sky with a few flurries.
Note wave of snow in Iowa & northern Missouri moving into Illinois Thursday night.
This should pass our area Friday morning. Very minor accumulation is possible. Mostly cloudy skies should follow with a melting of any snow with a high near 38.
Storm system Saturday should bring some rain, then snow. We should reach near 40, then fall to 31 with very minor snowfall accumulation late Saturday-Saturday night. Some snow showers are possible Sunday morning as temperatures fall to 24-28.
A big warm-up should occur on strong southerly winds to 35 mph Monday with highs 50-55 late in the day with mostly cloudy skies.
Rain & isolated thunder are likely Tuesday, before quickly changing to brief freezing rain, sleet & then snow.
The cold will come in so fast & undercut, that it looks to produce a band of this freezing rain & then sleet behind the front. Arctic air rushing in will throw wedge of warmth over the top of it, leading to the icy mix.
A thin veneer of ice is possible, along with a dusting of snow.
Temperatures may tank from 55-60 Tuesday to 8-12 by Wednesday morning with west wind gusts of 40-50 mph.
Temperatures Wednesday may be only run around 10-15 for highs with west wind still gusting to 40 mph, though skies will clear. Wind chills may drop to -10.
Increasing clouds with highs 12-18 are likely Thursday with wind gusts to 30 mph.
A wave of minor accumulating snowfall is possible Thursday night-Friday morning with temperatures 15-20.
Temperatures should fall Friday with blowing/drifting of the dry, powdery snow with northwest to west winds gusting to 40 mph with single digits. Wind chills may drop to -20.
Multiple nights below 0 are possible after this.
At this point, the time to watch for a winter storm is February 9-11 with snow, ice with a surge in temperatures to 31-35.
Models are aggressive with 0.90-1.25" liquid amounts.
Temperatures may drop below 0 again after the storm.