Yampa, CO 80479 Frost Dates
Frost dates for Yampa, CO, ZIP 80479
Typically, the last spring freeze lands around 06/14, roughly 290 days out. The first fall frost typically arrives around 09/11, about 89 frost-free days later.
Zone 5a (-20 to -15°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 Yampa, not a forecast for this year.
What to do before the first frost
Zone 5a around Yampa 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.
How much risk comes with planting early here
06/14 is the middle of 30 years of NOAA records, not a promise. Plant by 06/01 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 Yampa compares
About 89 days separate Yampa's last and first frost, putting it 39,931 of 40,283 ZIP codes nationally. Within CO, it ranks 555 of 624.
Learn more
zone vs. frost date explains why Zone 5a and Yampa's frost date answer different questions, and the frost range explains how to read the range around Yampa's dates instead of trusting one.