Poncha Springs, CO 81242 Frost Dates
Poncha Springs, CO: when does the frost end?
Typically, the last spring freeze lands around 05/29, roughly 274 days out. Fall's first freeze usually shows up around 09/20, roughly 112 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 Poncha Springs, not a forecast for this year.
Stretching the season past the first frost
With roughly 3 weeks until Poncha Springs's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/29 isn't a guarantee
05/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/12 and only about 1 year in 10 sees frost after that.
Poncha Springs against the rest of the dataset
Poncha Springs's growing season runs about 112 days, ranking 39,426 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 501 of 624.
Learn more
Before leaning on 81242's figures: local microclimates explains what one yard in Poncha Springs can differ from the 81242 normal, while zone vs. frost date explains why Zone 6a and Poncha Springs's frost date answer different questions.