Chicago’s run of exceptionally mild weather has come to an end, at least for the forseeable future. A sloppy mix of rain, freexing rain, sleet and snow that began Saturday evening diminishes to flurries Sunday morning, but not until leaving a coating of snow perhaps amounting to three inches across areas well northwest and north of Chicago. Lesser snow amounts are likely elsewhere: perhaps an inch in the immediate city area and little or no accumulation south and southeast of Chicago . Flurries move out later Sunday, giving way to a period of rather quiet weather (by winter standards) through the week, though weak disturbance may bring light snow or flurries about midweek. No major day-to-day temperature changes are likely, with readings running near or as much as about 9 degrees below the daily normal high/low values of 31 and 16 degrees.