National Weather Service United States Department of Commerce

Temps will be a roller coaster ride over the next week. Temps reach the 60s on Sunday before plummeting down to the 20s for highs on Monday. There are several chances for precip, with the most notable coming Sun into Mon. Check back as Sunday's forecast becomes clearer!
A line of severe storms is expected to develop along a strong cold front and move across central and southeastern IL late Sunday afternoon into the evening. Widespread wind damage and a few embedded tornadoes will be the main threat. There is still some uncertainty as to timing, so stay tuned.
Rain will switch over to snow behind the system on Sunday night. The cold front with the low pressure system will usher in strong winds and brutally cold wind chills on Sunday night and Monday night. The coldest night being Monday night with wind chills well below zero.