Tucson just experienced a record-warm, frost-free winter.
That's using the National Weather Service's definition of winter for its record-keeping: December 2025 through February 2026.
In Tucson, that period averaged 59.3 degrees.
That was a full 5 degrees above the normal wintertime average temperature.
It was also 1.4 degrees above the average temperature during the previous record-setting warm winter of 2017-'18.
Not only that, but we officially recorded no frosts this winter — and that's the first time that's happened since records started being kept here in 1894.
In an average year, the mercury drops to 32 degrees or lower on 10 days, but not this year.
