Wheat Ridge, CO 80215 Frost Dates
Wheat Ridge, CO: when does the frost end?
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 10/07, roughly 155 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Wheat Ridge 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 Wheat Ridge's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/03 isn't a guarantee
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Wheat Ridge against the rest of the dataset
About 155 days separate Wheat Ridge's last and first frost, putting it 33,918 of 40,283 ZIP codes nationally. Within CO, it ranks 243 of 624.
Learn more
Before leaning on 80215's figures: local microclimates explains what one yard in Wheat Ridge can differ from the 80215 normal, while zone vs. frost date explains why Zone 6a and Wheat Ridge's frost date answer different questions.