Mesa, AZ 85213 Frost Dates
When can you plant in Mesa, AZ?
Typically, the last spring freeze lands around 02/01, roughly 157 days out. The first fall frost typically arrives around 12/10, about 312 frost-free days later.
Mesa sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 15 weeks of growing season left in Mesa before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Mesa's last frost
02/01 is the middle of 30 years of NOAA records, not a promise. Plant by 01/01 and you're betting against frost in roughly 9 years out of 10. 02/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mesa compares
At roughly 312 frost-free days, Mesa places 3,457 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 229 of 506.
Learn more
local microclimates covers what one yard in Mesa can differ from the 85213 normal. zone vs. frost date covers why Zone 9b and Mesa's frost date answer different questions.