Sahuarita, AZ 85744 Frost Dates
85744, near Sahuarita, AZ: the frost window
The last spring frost here typically falls around 04/26, about 241 days from today. Fall's first freeze usually shows up around 11/04, roughly 195 days after the last spring frost.
Zone 9a (20 to 25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Sahuarita, not a forecast for this year.
Stretching the season past the first frost
Sahuarita's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/26 isn't a guarantee
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Sahuarita against the rest of the dataset
Sahuarita's growing season runs about 195 days, ranking 19,184 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 409 of 506.
Learn more
Two guides worth reading on 85744: zone vs. frost date, on why Zone 9a and Sahuarita's frost date answer different questions, and the frost range, on how to read the range around Sahuarita's dates instead of trusting one.