Colorado City, AZ 86021 Frost Dates
Colorado City, AZ: when does the frost end?
The last spring frost here typically falls around 04/26, about 241 days from today. Fall's first freeze usually shows up around 10/25, roughly 180 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Colorado City in Zone 7b (5 to 10°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 8 weeks until Colorado 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 Colorado City's last frost
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Colorado City against the rest of the dataset
Colorado City's growing season runs about 180 days, ranking 24,867 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 427 of 506.
Learn more
Before leaning on 86021's figures: local microclimates explains what one yard in Colorado City can differ from the 86021 normal, while zone vs. frost date explains why Zone 7b and Colorado City's frost date answer different questions.