Tuesday December 10th, the Tucson International airport had its first freezing temperature of the 2013/2014 winter season. At 5:23 am the airport recorded a low of 31°, one degree below the freezing point of 32°. But other areas had much colder weather to wake up to this morning.
Slightly warmer weather moving in today and overnight lows tomorrow back in the 30s, but not as cold as the above numbers. A high on Wednesday should be above normal, about 70°! Enjoy the great December weather.