Nucla, CO 81424 Frost Dates
Frost dates for Nucla, CO, ZIP 81424
Around 04/26 is the usual last spring frost, about 241 days away. The first fall frost typically arrives around 10/18, about 174 frost-free days later.
Nucla sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6a around Nucla has about 7 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 04/26 isn't a guarantee
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/10 and you're betting against frost in roughly 9 years out of 10. 05/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Nucla compares
Nucla's growing season runs about 174 days, ranking 27,583 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 10 of 624.
Learn more
zone vs. frost date explains why Zone 6a and Nucla's frost date answer different questions, and the frost range explains how to read the range around Nucla's dates instead of trusting one.