Tolleson, AZ 85353 Frost Dates
85353, near Tolleson, AZ: the frost window
Around 01/07 is the usual last spring frost, about 132 days away. Fall's first freeze usually shows up around 12/24, roughly 351 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.
How much risk comes with planting early here
01/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/05 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.
Tolleson against the rest of the dataset
Tolleson's growing season runs about 351 days, ranking 2,306 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 68 of 506.
Learn more
Two guides worth reading on 85353: zone vs. frost date, on why Zone 9b and Tolleson's frost date answer different questions, and the frost range, on how to read the range around Tolleson's dates instead of trusting one.