Central, CO 80427 Frost Dates
Frost dates for Central, CO, ZIP 80427
Around 06/05 is the usual last spring frost, about 281 days away. The first fall frost typically arrives around 09/16, about 103 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 Central, not a forecast for this year.
What to do before the first frost
Zone 5b around Central 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.
How much risk comes with planting early here
06/05 is the middle of 30 years of NOAA records, not a promise. Plant by 05/23 and you're betting against frost in roughly 9 years out of 10. 06/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Central compares
At roughly 103 frost-free days, Central places 39,624 of 40,283 ZIP codes in this dataset. Within CO, it ranks 517 of 624.
Learn more
zone vs. frost date explains why Zone 5b and Central's frost date answer different questions, and the frost range explains how to read the range around Central's dates instead of trusting one.