Westcliffe, CO 81223 Frost Dates
Frost dates for Westcliffe, CO, ZIP 81223
Typically, the last spring freeze lands around 06/11, roughly 287 days out. The first fall frost typically arrives around 09/09, about 89 frost-free days later.
The USDA Plant Hardiness Zone Map puts Westcliffe in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 5b around Westcliffe has about 2 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.
The actual range around Westcliffe's last frost
06/11 is the middle of 30 years of NOAA records, not a promise. Plant by 05/29 and you're betting against frost in roughly 9 years out of 10. 06/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Westcliffe compares
Westcliffe's growing season runs about 89 days, ranking 39,925 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 551 of 624.
Learn more
zone vs. frost date explains why Zone 5b and Westcliffe's frost date answer different questions, and the frost range explains how to read the range around Westcliffe's dates instead of trusting one.