Glendale, CO 80246 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.
Zone 6a (-10 to -5°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 Glendale, not a forecast for this year.
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.
The actual range around Glendale'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 Glendale compares
Glendale's growing season runs about 165 days, ranking 30,557 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 52 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 80246 normal.