• The coldest temperatures in almost two decades will spread into the northern and central U.S. today behind an arctic cold front. Combined with gusty winds, these temperatures will result in life-threatening wind chill values as low as 60 degrees below zero. Also, heavy snow will develop from the eastern Plains to the Great Lakes today, with up to a foot of accumulation possible.
• Today: Breezy. Much colder. Partly sunny. Patchy blowing snow through the day. Highs around 15 below. Tempera

ture steady or slowly falling in the afternoon. Northwest winds 10 to 20 mph increasing to around 25 mph in the afternoon. Coldest wind chill readings 45 below to 55 below zero in the afternoon.
• Tonight: Breezy. Mostly cloudy in the evening then becoming partly cloudy. Lows around 25 below. Northwest winds 15 to 25 mph. Wind chill readings 45 below to 55 below zero.
• Monday: Partly sunny. Highs around 15 below. Northwest winds 15 to 20 mph. Coldest wind chill readings 45 below to 55 below zero in the morning.
• Monday Night: Partly cloudy. Lows around 20 below. Temperature steady or slowly rising after midnight. West winds 5 to 15 mph shifting to the southwest up to 5 mph after midnight. Wind chill readings 30 below to 40 below zero.
• Tuesday: Mostly cloudy. Highs zero to 5 above. West winds up to 5 mph shifting to the northeast in the afternoon. Coldest wind chill readings 25 below to 35 below zero in the morning.
• Tuesday Night And Wednesday: Mostly cloudy. Lows around 10 below. Highs zero to 5 above. Wind chill readings 15 below to 25 below zero.
• Wednesday Night And Thursday: Mostly cloudy. Lows around 5 below. Highs around 15.
• Thursday Night Through Friday Night: Partly cloudy. Lows around 10. Highs in the mid 20s.