NWS 1-22-18 afternoon

Rain that has fallen off and on most of Monday in Madison is expected to change to snow later at night, which could result in a slippery ride to work or school on Tuesday.

The National Weather Service said southern Wisconsin could get 1 to 2 inches of wet snow overnight, more to the north and less to the south.

That doesn't compare to north-central and northwest Wisconsin, where up to 10 inches of snow is forecast.

Overnight lows in south-central Wisconsin are expected to drop to the upper 20s, which could freeze the rain and  melted snow, so drivers should be careful on the roads Tuesday morning.

The Weather Service issued a warning for drivers to watch for ponding water on roads, because melted snow and rain can't sink into frozen ground.

Streams and creeks are rising, so waterways can also get high enough to overflow onto roads.

This warning is for southwest Wisconsin and southeast Minnesota, including such cities as La Crosse, Sparta, Tomah and Richland Center.

Madison is expected to get about an inch of snow overnight, with the snow coming to an end Tuesday morning.

The day-to-day outlook:

  • Monday night: A 90 percent chance of rain and snow, becoming all snow after 11 p.m., low around 28. Winds gusting up to 30 mph.
  • Tuesday: A 20 percent chance of snow before noon, high near 31. Winds gusting up to 30 mph.
  • Tuesday night: Mostly cloudy, low around 17.
  • Wednesday: Partly sunny, high near 29.
  • Wednesday night: Partly cloudy, low around 18.
  • Thursday: Partly sunny, high near 39.
  • Thursday night: Partly cloudy, low around 30.
  • Friday: Mostly sunny, high near 47.
  • Friday night: A 40 percent chance of rain before 3 a.m., then a chance of rain and snow between 3 a.m. and 4 a.m., then a chance of snow after 4 a.m., low around 32.
  • Saturday: Mostly cloudy, high near 41.
  • Saturday night: Mostly cloudy, low around 21.
  • Sunday: Partly sunny, high near 30.

Bill Novak is a general assignment reporter for the Wisconsin State Journal.