Glendale, CO 80206 Frost Dates
When can you plant in Glendale, CO?
The last spring frost here typically falls around 04/30, about 245 days from today. The first fall frost typically arrives around 10/12, about 165 frost-free days later.
The USDA Plant Hardiness Zone Map puts Glendale 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
About 6 weeks of growing season left in Glendale before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/30 isn't a guarantee
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 Glendale compares
About 165 days separate Glendale's last and first frost, putting it 30,552 of 40,283 ZIP codes nationally. Within CO, it ranks 47 of 624.
Learn more
the frost range covers how to read the range around Glendale's dates instead of trusting one. local microclimates covers what one yard in Glendale can differ from the 80206 normal.