Tolleson, AZ 85043 Frost Dates
85043, near Tolleson, AZ: the frost window
The last spring frost here typically falls around 01/14, about 139 days from today. Fall's first freeze usually shows up around 12/22, roughly 343 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Tolleson in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Tolleson's growing season runs out in roughly 17 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 Tolleson's last frost
01/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/19 and only about 1 year in 10 sees frost after that.
Tolleson against the rest of the dataset
About 343 days separate Tolleson's last and first frost, putting it 2,536 of 40,283 ZIP codes nationally. Within AZ, it ranks 136 of 506.
Learn more
Two guides worth reading on 85043: local microclimates, on what one yard in Tolleson can differ from the 85043 normal, and zone vs. frost date, on why Zone 9b and Tolleson's frost date answer different questions.