Fountain, CO 80926 Frost Dates
Fountain, CO: when does the frost end?
The last spring frost here typically falls around 06/03, about 279 days from today. Fall's first freeze usually shows up around 09/17, roughly 102 days after the last spring frost.
Fountain sits in USDA Zone 6a (-10 to -5°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 3 weeks until Fountain's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 06/03 isn't a guarantee
06/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/23 and only about 1 year in 10 sees frost after that.
Fountain against the rest of the dataset
Fountain's growing season runs about 102 days, ranking 39,636 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 519 of 624.
Learn more
Before leaning on 80926's figures: zone vs. frost date explains why Zone 6a and Fountain's frost date answer different questions, while the frost range explains how to read the range around Fountain's dates instead of trusting one.