Hopefully, it will be under 90 degrees in mid March! Last time, we hiked in Cave Creek County Park around the 8-10th of March. It was in the upper 70s to low 80s, which isn't really hot, but we were coming from 30-50 degrees at home. It was still nice and cool at night, so that helped.
I have bad memories of my younger son's birthday parties in mid April. Always over 100 degrees. One year we had a gymnastics breakfast party in the backyard. The people came and set up the equipment at 7:30 AM, kids did the fun stuff from 8-9:00, and then we had them come inside for pancakes, cake, and presents in the AC, after that.
2015 Trek Silque SSL
Specialized Oura
2011 Guru Praemio
Specialized Oura
2017 Specialized Ariel Sport