Here's a look at Tuesday mornings low temperatures from some of our Weather-Bug sites.
Today we'll rebound into the low 50's for highs and Wednesday will see highs in the mid 50's. Its Thursday morning that the bottom drops out with the passage of an arctic front. Expect winds to gust to 30mph out of the north beginning Thursday morning and temps will fall from the upper 30's to below freezing by early afternoon.
Expect lows Friday, Saturday and Sunday morning to be 5 to 8 degrees colder than this mornings lows. Temps may not get above freezing north of I-10 for 24-60 hours.
Pipes, pets, plants, people and livestock all need to be protected from the cold Thursday through Sunday.