DENVER — A teeth chattering, fingers frozen arctic cold continued to funnel into the Rocky Mountains and Midwest on Tuesday, sending temperatures plummeting below zero throughout much of the region.

A storm front creeping south since the weekend has driven down temperatures from Montana to the Midwest. With a brisk wind, it felt like 15 below zero Tuesday in Sioux Falls, S.D. -- where Wednesday’s forecast high was a miserly 5 degrees.

Jackson, Wyo., was expecting an overnight low of minus 17 while the forecast for Bozeman, Mont., was minus 13.

There was some relief in sight.

This weekend, temperatures are expected to climb into the lower 30s.

“So, it’s a slow, gradual warmup ... if you can call that warm,” said weather service meteorologist Andrew Krein.


The mercury dropped below zero before sunset in Casper, Wyo., and Gunnison, Colo., was bracing for another frigid night after a low of 24 below zero overnight Monday.

Forecasts called for a low of minus 25 in the Colorado ski resort town of Steamboat Springs.

In Chicago, temperatures Monday dipped to a low of 4 degrees, beating the old record of 6 degrees set in 1895, according to the National Weather Service.

In the Quad Cities of Bettendorf and Davenport, Iowa, and Moline and Rock Island, Ill., temperatures fell to a frigid minus 4 Monday. The previous record low of minus 2 was set in 1886.

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