FrostDateCheck

Sahuarita, AZ 85723 Frost Dates

When can you plant in Sahuarita, AZ?

Zone 9b

Typically, the last spring freeze lands around 04/26, roughly 241 days out. The first fall frost typically arrives around 11/04, about 195 frost-free days later.

The USDA Plant Hardiness Zone Map puts Sahuarita in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.

What to do before the first frost

About 10 weeks of growing season left in Sahuarita before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.

The actual range around Sahuarita's last frost

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

About 195 days separate Sahuarita's last and first frost, putting it 19,178 of 40,283 ZIP codes nationally. Within AZ, it ranks 403 of 506.

Learn more

local microclimates covers what one yard in Sahuarita can differ from the 85723 normal. zone vs. frost date covers why Zone 9b and Sahuarita's frost date answer different questions.