Peoria, AZ 85342 Frost Dates
Peoria, AZ: when does the frost end?
Around 01/15 is the usual last spring frost, about 140 days away. Fall's first freeze usually shows up around 12/22, roughly 341 days after the last spring frost.
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 Peoria, not a forecast for this year.
Stretching the season past the first frost
With roughly 17 weeks until Peoria's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Peoria's last frost
01/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/19 and only about 1 year in 10 sees frost after that.
Peoria against the rest of the dataset
About 341 days separate Peoria's last and first frost, putting it 2,578 of 40,283 ZIP codes nationally. Within AZ, it ranks 143 of 506.
Learn more
Before leaning on 85342's figures: the frost range explains how to read the range around Peoria's dates instead of trusting one, while local microclimates explains what one yard in Peoria can differ from the 85342 normal.