Bitterly cold temperatures close schools

What you need to know: Monday

A bitter cold wave is keeping temperatures in much of Wisconsin hovering below zero, and shutting down schools around southern Wisconsin. Wind chill values range from -20 to -30 this morning.

More than 50 schools around southern Wisconsin are closed due to the frigid temperatures Monday.

The National Weather Service said lows overnight plunged to 18 below in northwestern Wisconsin and 3 below along Lake Michigan in the southeast. Temperatures Sunday afternoon were generally a few degrees above or below zero statewide.

In west-central Wisconsin, the La Crosse Tribune report a frozen pipe apparently caused a sprinkler system to fail late Friday at Gundersen Health System’s Tomah Clinic, sending a gusher of water into the clinic. The clinic will be closed for at least two weeks while crews repair the damage.

A statewide wind chill advisory is in effect through Monday morning. Wind chill values will improve a little this afternoon, but remain below zero throughout the day.

Meteorologist Haddie McLean expects warmer weather to arrive by the middle of the week.  Highs across Wisconsin will be back in the 20s on Wednesday and in the lower 30s on Sunday.