Bullhead City, AZ 89028 Frost Dates
Bullhead City, AZ: when does the frost end?
Typically, the last spring freeze lands around 01/04, roughly 129 days out. Fall's first freeze usually shows up around 12/23, roughly 356 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
With roughly 17 weeks until Bullhead City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Bullhead City's last frost
01/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/12 and only about 1 year in 10 sees frost after that.
Bullhead City against the rest of the dataset
Bullhead City's growing season runs about 356 days, ranking 2,109 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 33 of 506.
Learn more
Before leaning on 89028's figures: local microclimates explains what one yard in Bullhead City can differ from the 89028 normal, while zone vs. frost date explains why Zone 10a and Bullhead City's frost date answer different questions.