Prescott Valley, AZ 86312 Frost Dates
86312, near Prescott Valley, AZ: the frost window
The last spring frost here typically falls around 04/20, about 235 days from today. Fall's first freeze usually shows up around 10/27, roughly 188 days after the last spring frost.
Prescott Valley sits in USDA Zone 7b (5 to 10°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
Prescott Valley's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Prescott Valley's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Prescott Valley against the rest of the dataset
Prescott Valley's growing season runs about 188 days, ranking 21,831 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 419 of 506.
Learn more
Two guides worth reading on 86312: the frost range, on how to read the range around Prescott Valley's dates instead of trusting one, and local microclimates, on what one yard in Prescott Valley can differ from the 86312 normal.