Rain showers will spread across the region on Monday and Monday night ahead of an approaching cold front. Another low pressure system is expected to affect Missouri and Illinois from Wednesday night through Thursday night. This system is expected to bring a wintry mix of rain, snow, and possibly sleet to parts of the area. We'll start to get a better idea of the precipitation types and amounts over the next several days. (Please visit http://weather.gov/lsx for more information.)