Bennett, CO 80161 Frost Dates
Frost dates for Bennett, CO, ZIP 80161
Typically, the last spring freeze lands around 05/05, roughly 250 days out. The first fall frost typically arrives around 10/09, about 156 frost-free days later.
The USDA Plant Hardiness Zone Map puts Bennett in Zone 6a (-10 to -5°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 6a around Bennett has about 6 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
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/23 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bennett compares
About 156 days separate Bennett's last and first frost, putting it 33,602 of 40,283 ZIP codes nationally. Within CO, it ranks 215 of 624.
Learn more
the frost range explains how to read the range around Bennett's dates instead of trusting one, and local microclimates explains what one yard in Bennett can differ from the 80161 normal.