Arctic air will start to move in tonight, bringing the coldest air we have seen all season.

It was a beautiful day across the Tennessee Valley, but bitter cold conditions move in by tonight. Overnight lows fall into the mid 20s.

Even colder air arrives Sunday. We'll only climb to around 30 for the highs, and factor in the wind and it will feel even colder with wind chills in the single digits first thing Sunday morning and staying in the teens through the afternoon.

Pipe busting cold expected Sunday night, with lows falling into the mid teens in most areas by sunrise Monday. Monday's highs will barely hit 40 in most areas even under mostly sunny skies.

Another cold night is expected Monday, with lows in the mid 20s again, but after that expect a steady warming trend the rest of the wee

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