Gilbert, AZ 85295 Frost Dates
Gilbert, AZ: when does the frost end?
Around 02/01 is the usual last spring frost, about 157 days away. Fall's first freeze usually shows up around 12/11, roughly 315 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 Gilbert, not a forecast for this year.
Stretching the season past the first frost
With roughly 15 weeks until Gilbert'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
02/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 02/27 and only about 1 year in 10 sees frost after that.
Gilbert against the rest of the dataset
Gilbert's growing season runs about 315 days, ranking 3,392 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 204 of 506.
Learn more
Before leaning on 85295's figures: local microclimates explains what one yard in Gilbert can differ from the 85295 normal, while zone vs. frost date explains why Zone 9b and Gilbert's frost date answer different questions.