Sahuarita, AZ 85736 Frost Dates
Frost dates for Sahuarita, AZ, ZIP 85736
Typically, the last spring freeze lands around 03/27, roughly 211 days out. The first fall frost typically arrives around 11/09, about 226 frost-free days later.
Zone 8b (15 to 20°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 8b 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.
Why 03/27 isn't a guarantee
03/27 is the middle of 30 years of NOAA records, not a promise. Plant by 03/05 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sahuarita compares
About 226 days separate Sahuarita's last and first frost, putting it 11,143 of 40,283 ZIP codes nationally. Within AZ, it ranks 339 of 506.
Learn more
zone vs. frost date explains why Zone 8b and Sahuarita's frost date answer different questions, and the frost range explains how to read the range around Sahuarita's dates instead of trusting one.