Mountain View, CO 80212 Frost Dates
Frost dates for Mountain View, CO, ZIP 80212
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/12, about 165 frost-free days later.
Mountain View 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 Mountain View 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.
The actual range around Mountain View's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/15 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mountain View compares
About 165 days separate Mountain View's last and first frost, putting it 30,698 of 40,283 ZIP codes nationally. Within CO, it ranks 64 of 624.
Learn more
zone vs. frost date explains why Zone 6a and Mountain View's frost date answer different questions, and the frost range explains how to read the range around Mountain View's dates instead of trusting one.