Grab your galoshes: Snow on its way overnight, will turn to afternoon rain

Sauk Valley residents could wake up to the season's first accumulation of snow on Tuesday.

The National Weather Service has a winter weather advisory in effect for the area until 8 a.m. Tuesday, and is warning of a system that will bring 2 to 4 inches of snow tonight and early tomorrow.

Snowfall is expected to be heavier farther to the north and west. The system could hamper travel, with slippery road conditions and reduced visibility.

The snow is likely to turn to light rain by Tuesday afternoon, when the high is expected to hit the mid 40s, with more rain in the forecast that night and Wednesday.

The rain is expected to let up on Thanksgiving Day, which will be cloudy with a high near 50. Daytime temps will drop to the mid 40s the rest of the week, with lows in the low 30s to upper 20s, the weather service says.