A wind-chill advisory is in effect through late Thursday morning, as the overnight temperature was expected to fall to near zero and the wind might make it feel 15 or more degrees colder.

The worst of it is expected between 4 a.m. and 8 a.m.

Under these conditions, frostbite and hypothermia are possible. Frostbite is painful, and hypothermia can kill. Anyone going outside is advised to wear a hat and gloves.

The National Weather Service says the wind out of the northwest at 15 to 25 mph – and gusts to 35 – could drive the wind-chill reading to minus 17 in Kansas City. Similar advisories are up for most of the Midwest.

The Thursday high is forecast at just 15 – along with low wind-chill readings – but then the roller coast might rise and level off for a while. Friday’s high is forecast at 39 – with an elevated wildfire risk as dry conditions continue – then 43 Saturday and 48 Sunday.

The roller coaster dips again late Sunday, with a low of 10 and a high Monday of just 19. There’s no rain or snow in the forecast for the next week.