TUCSON, Ariz. (13 News) – Our coolest lows since February this morning & tomorrow morning with another Freeze Warning to our south & east (for Nogales, Sierra Vista, Benson, Willcox, Douglas, Safford) tonight/tomorrow morning. Therefore, we have another First Alert Action night tonight. A high of 59 today would be our coolest high since April 1st. Slowly warming up through the weekend to the 60s, 70s, & 80s.