Poncha Springs, CO 81155 Frost Dates
Frost dates for Poncha Springs, CO, ZIP 81155
Around 05/29 is the usual last spring frost, about 274 days away. The first fall frost typically arrives around 09/20, about 112 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 Poncha Springs, not a forecast for this year.
What to do before the first frost
Zone 5b around Poncha Springs has about 3 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 05/29 isn't a guarantee
05/29 is the middle of 30 years of NOAA records, not a promise. Plant by 05/15 and you're betting against frost in roughly 9 years out of 10. 06/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Poncha Springs compares
At roughly 112 frost-free days, Poncha Springs places 39,424 of 40,283 ZIP codes in this dataset. Within CO, it ranks 499 of 624.
Learn more
local microclimates explains what one yard in Poncha Springs can differ from the 81155 normal, and zone vs. frost date explains why Zone 5b and Poncha Springs's frost date answer different questions.