Fairplay, CO 80456 Frost Dates
Fairplay, CO: when does the frost end?
Typically, the last spring freeze lands around 06/15, roughly 291 days out. Fall's first freeze usually shows up around 09/09, roughly 84 days after the last spring frost.
Fairplay sits in USDA Zone 5a (-20 to -15°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 2 weeks until Fairplay's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 06/15 isn't a guarantee
06/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 06/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/30 and only about 1 year in 10 sees frost after that.
Fairplay against the rest of the dataset
Fairplay's growing season runs about 84 days, ranking 40,004 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 560 of 624.
Learn more
Before leaning on 80456's figures: zone vs. frost date explains why Zone 5a and Fairplay's frost date answer different questions, while the frost range explains how to read the range around Fairplay's dates instead of trusting one.