NWS Forecast Office Tucson, AZ

A colder airmass taking-up residence the next few days across Southeast Arizona. Afternoon high temperatures will be around 5 degrees below climatological normal both today and Friday. Morning low temperatures will be quite chilly...especially in the valleys to the south and east of Tucson. I added a graphic that shows the probability of a hard freeze (at or below 28 degrees) Friday morning. For some of these areas, it will be the first freezing temperatures of the season. There is a Freeze Warning in effect from 2 am to 9 am MST Friday morning for the eastern valleys of Southeast Arizona.