Glendale, CO 80218 Frost Dates
Glendale, CO: when does the frost end?
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/12, roughly 165 days after the last spring frost.
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.
Stretching the season past the first frost
With roughly 6 weeks until Glendale's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
Glendale against the rest of the dataset
About 165 days separate Glendale's last and first frost, putting it 30,555 of 40,283 ZIP codes nationally. Within CO, it ranks 50 of 624.
Learn more
Before leaning on 80218's figures: local microclimates explains what one yard in Glendale can differ from the 80218 normal, while zone vs. frost date explains why Zone 6a and Glendale's frost date answer different questions.