An approaching warm front Thursday night will bring a very light wintry mix to southern Wisconsin and northern Illinois. Accumulations are not expected, but the wintry mix could cause roads in southern Wisconsin to become a little slick overnight. Surface temperatures are slowly falling towards freezing and this could cause a brief period of freezing rain over southeast Wisconsin.
Once the warm front passes, temperatures will warm a few degrees into Friday morning. This will cause any wintry weather to transition over to light rain and drizzle Friday morning. The precipitation will end with the passage of a cold front mid-day. Clouds may stick around through the afternoon, but most of the afternoon should remain dry. Temperatures will warm into the middle 40's.