Bullhead City, AZ 86426 Frost Dates
When can you plant in Bullhead City, AZ?
Typically, the last spring freeze lands around 01/04, roughly 129 days out. The first fall frost typically arrives around 12/23, about 356 frost-free days later.
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 Bullhead City, not a forecast for this year.
What to do before the first frost
About 17 weeks of growing season left in Bullhead City before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Bullhead City's last frost
01/04 is the middle of 30 years of NOAA records, not a promise. Plant by 02/05 and you're betting against frost in roughly 9 years out of 10. 12/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bullhead City compares
About 356 days separate Bullhead City's last and first frost, putting it 2,104 of 40,283 ZIP codes nationally. Within AZ, it ranks 28 of 506.
Learn more
local microclimates covers what one yard in Bullhead City can differ from the 86426 normal. zone vs. frost date covers why Zone 9b and Bullhead City's frost date answer different questions.