Deer Trail, CO 80757 Frost Dates
Frost dates for Deer Trail, CO, ZIP 80757
Around 05/15 is the usual last spring frost, about 260 days away. The first fall frost typically arrives around 10/02, about 139 frost-free days later.
Zone 5b (-15 to -10°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 Deer Trail, not a forecast for this year.
What to do before the first frost
Zone 5b around Deer Trail has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 05/15 isn't a guarantee
05/15 is the middle of 30 years of NOAA records, not a promise. Plant by 05/02 and you're betting against frost in roughly 9 years out of 10. 05/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Deer Trail compares
Deer Trail's growing season runs about 139 days, ranking 37,239 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 405 of 624.
Learn more
the frost range explains how to read the range around Deer Trail's dates instead of trusting one, and local microclimates explains what one yard in Deer Trail can differ from the 80757 normal.