GREEN BAY, WI (WTAQ) - All of Wisconsin remains below zero, as folks wake up to the coldest morning of the winter.

It was 20-below in Hayward at 6 a.m., and Rhinelander had 19-below. Milwaukee had 5-below, and several places in far southern Wisconsin were at minus-4.

Wind-chill factors hit 40-below at Rhinelander, and minus-36 at Ashland. Light snow fell in the far north overnight, and other places had isolated flurries.

The National Weather Service says parts of Wisconsin will have lows below-zero every night this week, but Tuesday morning was the worst of it.

Hayward had an actual temperature of minus-23 during the night.

Most parts of the state are expected to get above zero today – and Tuesday night’s lows are supposed to bottom out at 15-below in the far north. The far south could stay above zero, with lows of plus-2 expected.

More scattered flurries and light snow are possible every day through Friday.