January Starts with Snow and Freezing Temperatures in Central Illinois

Chicago, IL – The tumultuous end of 2024 has ushered in warm and rainy weather for Central Illinois over the last fortnight, yet it appears we are set to embark on a markedly different journey as we welcome January. Significantly colder air is set to move into the area, bringing multiple chances for snowfall accumulation in the coming weeks.

Anticipated snowfall opportunities

With the arrival of colder air, we can expect a few chances for snow accumulation this week, and it seems there will be additional opportunities in the weeks ahead. Light snow flurries are expected to affect Central Illinois on Tuesday night and Wednesday, with a more significant opportunity for accumulation arriving on Thursday.

A fast-moving system is set to deliver a brief snowfall to the region between noon and 10 PM on Thursday. Anticipated snow accumulations of 0.5″ to 2.0″ are likely to affect the Thursday evening commute.

Following Thursday, we can anticipate calm conditions on Friday and Saturday; however, a storm system is on the horizon, promising another chance for accumulating snow on Sunday and Monday. The amount of snow we get will hinge on the storm’s path, which is still unclear at this moment.

Potential developments in southern Illinois – 40% likelihood

A low-pressure system is set to move through extreme southern Illinois, resulting in a band of moderate to heavy precipitation across Central Illinois. The exact amount of snow remains unclear, but it is expected to be significant enough to create travel challenges throughout a large portion of the state.

Southern route across Tennessee – 40% likelihood

The incoming system is set to move through Tennessee, with the most significant snowfall expected near I-70. We will still see some snow with this system, but the amounts are expected to be lighter and more manageable.

Unusual path expected in northern Mississippi – 20% likelihood

This situation is quite unexpected, but if it does unfold, there’s a strong possibility that snow will bypass most regions north of I-74 entirely.

No matter the outcome of the snowfall this weekend, a drop in temperatures is on the horizon, with Thursday expected to be the final day of above-freezing temperatures for at least the next fortnight. Expect warm weather in the 20s from January 3rd to the 7th, followed by a significant drop into the teens from January 8th to the 12th. The upcoming storm system this weekend may lead to temperatures next week that could remain quite frigid, potentially staying in the single digits.