Sahuarita, AZ 85703 Frost Dates
Frost dates for Sahuarita, AZ, ZIP 85703
The last spring frost here typically falls around 04/26, about 241 days from today. The first fall frost typically arrives around 11/04, about 195 frost-free days later.
Zone 9b (25 to 30°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.
What to do before the first frost
Zone 9b around Sahuarita has about 10 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sahuarita compares
At roughly 195 frost-free days, Sahuarita places 19,174 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 399 of 506.
Learn more
the frost range explains how to read the range around Sahuarita's dates instead of trusting one, and local microclimates explains what one yard in Sahuarita can differ from the 85703 normal.