Bullhead City, AZ 86430 Frost Dates
86430, near Bullhead City, AZ: the frost window
The last spring frost here typically falls around 01/05, about 130 days from today. Fall's first freeze usually shows up around 12/24, roughly 354 days after the last spring frost.
Bullhead City 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
Bullhead City's growing season runs out in roughly 17 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
01/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/11 and only about 1 year in 10 sees frost after that.
Bullhead City against the rest of the dataset
At roughly 354 frost-free days, Bullhead City places 2,176 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 53 of 506.
Learn more
Two guides worth reading on 86430: local microclimates, on what one yard in Bullhead City can differ from the 86430 normal, and zone vs. frost date, on why Zone 10a and Bullhead City's frost date answer different questions.