Carbondale, CO 81623 Frost Dates
Carbondale, CO: when does the frost end?
The last spring frost here typically falls around 05/13, about 258 days from today. Fall's first freeze usually shows up around 10/03, roughly 142 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Carbondale in Zone 6a (-10 to -5°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 5 weeks until Carbondale's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Carbondale's last frost
05/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/30 and only about 1 year in 10 sees frost after that.
Carbondale against the rest of the dataset
At roughly 142 frost-free days, Carbondale places 36,725 of 40,283 ZIP codes in this dataset. Within CO, it ranks 393 of 624.
Learn more
Before leaning on 81623's figures: local microclimates explains what one yard in Carbondale can differ from the 81623 normal, while zone vs. frost date explains why Zone 6a and Carbondale's frost date answer different questions.