Wellton, AZ 85369 Frost Dates
85369, near Wellton, AZ: the frost window
The last spring frost here typically falls around 01/11, about 136 days from today. Fall's first freeze usually shows up around 12/21, roughly 347 days after the last spring frost.
Wellton sits in USDA Zone 10a (30 to 35°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Wellton's growing season runs out in roughly 16 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Wellton's last frost
01/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/17 and only about 1 year in 10 sees frost after that.
Wellton against the rest of the dataset
At roughly 347 frost-free days, Wellton places 2,415 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 77 of 506.
Learn more
Two guides worth reading on 85369: local microclimates, on what one yard in Wellton can differ from the 85369 normal, and zone vs. frost date, on why Zone 10a and Wellton's frost date answer different questions.