Haxtun, CO 80731 Frost Dates
80731, near Haxtun, CO: the frost window
Around 05/11 is the usual last spring frost, about 256 days away. Fall's first freeze usually shows up around 10/03, roughly 144 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Haxtun in Zone 5b (-15 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
Haxtun's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/11 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 05/23 and only about 1 year in 10 sees frost after that.
Haxtun against the rest of the dataset
About 144 days separate Haxtun's last and first frost, putting it 36,407 of 40,283 ZIP codes nationally. Within CO, it ranks 375 of 624.
Learn more
Two guides worth reading on 80731: local microclimates, on what one yard in Haxtun can differ from the 80731 normal, and zone vs. frost date, on why Zone 5b and Haxtun's frost date answer different questions.