Garden City, CO 80631 Frost Dates
Garden City, CO: when does the frost end?
The last spring frost here typically falls around 05/02, about 247 days from today. Fall's first freeze usually shows up around 10/08, roughly 159 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Garden City in Zone 5a (-20 to -15°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 6 weeks until Garden 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 Garden City's last frost
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Garden City against the rest of the dataset
Garden City's growing season runs about 159 days, ranking 32,772 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 130 of 624.
Learn more
Before leaning on 80631's figures: the frost range explains how to read the range around Garden City's dates instead of trusting one, while local microclimates explains what one yard in Garden City can differ from the 80631 normal.