Several locations across the Northland reported Thursday morning temperatures at or even colder than 40 degrees below zero — that magical spot on the thermometer where Fahrenheit and Celsius agree.

Cotton appears to have taken top honors Thursday morning at 46 below zero, according to the National Weather Service in Duluth, while an observer 25 miles east of Ely reported 44 below; Ash Lake hit 41 below; and both Kabetogama and the Sea Gull Guard Station on the Gunflint Trail reached 40 below zero — the coldest temperatures of the winter so far.

Duluth officially hit 21 below zero and temperatures across Northwestern Wisconsin dipped well into the 20s and even 30s below zero.

The bitterly cold weather, already an unwanted guest for the past week, is expected to hang around into Monday, and in fact, temperatures may not go above zero again until Monday, when the high temperature for Duluth is forecast to hit 5 above.

High temps into the teens above zero are forecast for the middle of next week — still nearly 10 degrees below normal.