BISMARCK, N.D. (AP) — Bone-chilling cold is blanketing the Dakotas as the workweek begins.

Temperatures early Monday dropped well below zero in North Dakota, with wind chills as cold as minus 31 degrees in Minot. The National Weather Service says frostbite to exposed skin can happen within half an hour under those conditions.

Wind chills weren't quite as bad in South Dakota, but up to 4 inches of snow was expected in the southern part of the state. The weather service says the 1.8 inches of snow that fell in Rapid City on Sunday broke the city's record for the date of 1.6 inches, set in 1976.

The cold weather was forecast to continue into Tuesday. The weather service posted wind chill advisories for most areas of the two states into Tuesday morning.

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