Linked below, a look at snowfall coverage and amounts across much of Illinois from the late-season Winter storm that struck on Sunday, March 24, 2013:
Mapping and Listing of Snowfall Amounts Across Central, Southern Illinois 
Across the rest of the Corn Belt, cold, breezy conditions prevail. Snow is falling across much of the central and eastern Corn, especially from Illinois to Ohio. Snow flurries linger across the remainder of the Midwest.
On the Plains, unusually cold weather prevails in the wake of a departing storm. A few snow showers linger across eastern portions of the northern Plains. Freeze Warnings were in effect Monday morning across much of central and northeastern Texas, as well as eastern Oklahoma. Winter wheat that is just starting to joint can typically be harmed by temperatures below 20°; in Oklahoma, where 31% of the crop had jointed by March 17, Monday’s low temperatures generally ranged from 20 to 30°.
In the South, showers and thunderstorms are crossing the southern tip of Florida. Meanwhile, snow showers are affecting the interior Southeast, including parts of Kentucky and Tennessee. Farther west, Freeze Warnings were in effect this morning in several areas, including portions of Arkansas and northern Louisiana.
In the West, warm, dry weather across California favors spring fieldwork. In contrast, very cold conditions persist in the Rockies and adjacent areas of the eastern Intermountain West.
A complex storm system currently draped across the Midwestern and Mid-Atlantic States will intensify over the western Atlantic Ocean, generating additional snowfall for the remainder of Monday. Scattered snow showers will linger, however, through Tuesday.
Then, following several days of generally tranquil weather, precipitation will develop toward week’s end across the southern half of the Plains and parts of the West. Some of the heaviest precipitation, locally an inch or more, can be expected across the southern Plains and the Pacific Northwest. Most areas east of the Rockies will remain locked into a cold weather pattern, although late-week warmth will spread from the West to the High Plains.
Looking ahead, the 6- to 10-day outlook calls for above-normal temperatures in the West, while colder-than-normal weather will prevail in most areas from the Plains to the East Coast. Meanwhile, above-normal precipitation across the majority of the U.S. will contrast with drier-than-normal conditions in the Northwest and portions of the southern Rockies and upper Midwest.