Gilbert, AZ 85233 Frost Dates
Gilbert, AZ: when does the frost end?
The last spring frost here typically falls around 02/13, about 169 days from today. Fall's first freeze usually shows up around 12/05, roughly 298 days after the last spring frost.
Gilbert sits in USDA Zone 9b (25 to 30°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
With roughly 14 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
02/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/09 and only about 1 year in 10 sees frost after that.
Gilbert against the rest of the dataset
About 298 days separate Gilbert's last and first frost, putting it 4,186 of 40,283 ZIP codes nationally. Within AZ, it ranks 257 of 506.
Learn more
Before leaning on 85233's figures: the frost range explains how to read the range around Gilbert's dates instead of trusting one, while local microclimates explains what one yard in Gilbert can differ from the 85233 normal.