(AP)–Nebraskans are preparing to deal with the coldest air of the season.

A blast of artic cold is moving into the state on Sunday afternoon. The National Weather Service says dangerously cold temperatures will follow.

Temperatures will fall as low as 15-to-20 degrees below zero across Nebraska Sunday night, and Monday’s high temperatures could remain below zero in many places.

Wind chills of 30-to-40 degrees below zero are expected across Nebraska Sunday night.

Officials are warning that frostbite and hypothermia are possible if people aren’t properly bundled up.

But forecasters say the temperatures aren’t likely to set records across eastern Nebraska and western Iowa.