Kearny, AZ 85137 Frost Dates
Kearny, AZ: when does the frost end?
Typically, the last spring freeze lands around 01/18, roughly 143 days out. Fall's first freeze usually shows up around 12/28, roughly 342 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 Kearny, not a forecast for this year.
Stretching the season past the first frost
With roughly 17 weeks until Kearny's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Kearny's last frost
01/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/01 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.
Kearny against the rest of the dataset
About 342 days separate Kearny's last and first frost, putting it 2,558 of 40,283 ZIP codes nationally. Within AZ, it ranks 141 of 506.
Learn more
Before leaning on 85137's figures: the frost range explains how to read the range around Kearny's dates instead of trusting one, while local microclimates explains what one yard in Kearny can differ from the 85137 normal.