Quartzsite, AZ 85359 Frost Dates
Quartzsite, AZ: when does the frost end?
Around 01/28 is the usual last spring frost, about 153 days away. Fall's first freeze usually shows up around 12/06, roughly 315 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Quartzsite in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 14 weeks until Quartzsite's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
01/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/31 and only about 1 year in 10 sees frost after that.
Quartzsite against the rest of the dataset
About 315 days separate Quartzsite's last and first frost, putting it 3,422 of 40,283 ZIP codes nationally. Within AZ, it ranks 216 of 506.
Learn more
Before leaning on 85359's figures: local microclimates explains what one yard in Quartzsite can differ from the 85359 normal, while zone vs. frost date explains why Zone 9b and Quartzsite's frost date answer different questions.