Woodland Park, CO 80866 Frost Dates
80866, near Woodland Park, CO: the frost window
Around 05/17 is the usual last spring frost, about 262 days away. Fall's first freeze usually shows up around 10/01, roughly 135 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Woodland Park in Zone 5a (-20 to -15°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
Woodland Park's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/17 isn't a guarantee
05/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/06 and only about 1 year in 10 sees frost after that.
Woodland Park against the rest of the dataset
Woodland Park's growing season runs about 135 days, ranking 37,838 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 424 of 624.
Learn more
Two guides worth reading on 80866: the frost range, on how to read the range around Woodland Park's dates instead of trusting one, and local microclimates, on what one yard in Woodland Park can differ from the 80866 normal.