Glendale, AZ 85007 Frost Dates
85007, near Glendale, AZ: the frost window
The last spring frost here typically falls around 01/21, about 146 days from today. Fall's first freeze usually shows up around 12/16, roughly 331 days after the last spring frost.
Glendale sits in USDA Zone 10a (30 to 35°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.
Stretching the season past the first frost
Glendale's growing season runs out in roughly 16 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 01/21 isn't a guarantee
01/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/24 and only about 1 year in 10 sees frost after that.
Glendale against the rest of the dataset
Glendale's growing season runs about 331 days, ranking 2,911 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 158 of 506.
Learn more
Two guides worth reading on 85007: local microclimates, on what one yard in Glendale can differ from the 85007 normal, and zone vs. frost date, on why Zone 10a and Glendale's frost date answer different questions.