Crawford, CO 81415 Frost Dates
Crawford, CO: when does the frost end?
The last spring frost here typically falls around 05/23, about 268 days from today. Fall's first freeze usually shows up around 10/01, roughly 130 days after the last spring frost.
Zone 6a (-10 to -5°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 Crawford, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Crawford's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/23 isn't a guarantee
05/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/09 and only about 1 year in 10 sees frost after that.
Crawford against the rest of the dataset
Crawford's growing season runs about 130 days, ranking 38,407 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 437 of 624.
Learn more
Before leaning on 81415's figures: local microclimates explains what one yard in Crawford can differ from the 81415 normal, while zone vs. frost date explains why Zone 6a and Crawford's frost date answer different questions.