Erie, CO 80516 Frost Dates
Erie, CO: when does the frost end?
The last spring frost here typically falls around 05/02, about 247 days from today. Fall's first freeze usually shows up around 10/11, roughly 160 days after the last spring frost.
Erie sits in USDA Zone 5b (-15 to -10°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.
Stretching the season past the first frost
With roughly 6 weeks until Erie'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
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Erie against the rest of the dataset
Erie's growing season runs about 160 days, ranking 32,231 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 91 of 624.
Learn more
Before leaning on 80516's figures: zone vs. frost date explains why Zone 5b and Erie's frost date answer different questions, while the frost range explains how to read the range around Erie's dates instead of trusting one.