Huachuca City, AZ 85636 Frost Dates
Huachuca City, AZ: when does the frost end?
Around 04/05 is the usual last spring frost, about 220 days away. Fall's first freeze usually shows up around 11/09, roughly 216 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Huachuca City in Zone 8b (15 to 20°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 10 weeks until Huachuca City'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
04/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Huachuca City against the rest of the dataset
Huachuca City's growing season runs about 216 days, ranking 13,833 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 370 of 506.
Learn more
Before leaning on 85636's figures: zone vs. frost date explains why Zone 8b and Huachuca City's frost date answer different questions, while the frost range explains how to read the range around Huachuca City's dates instead of trusting one.