Manitou Springs, CO 80829 Frost Dates
80829, near Manitou Springs, CO: the frost window
Around 06/03 is the usual last spring frost, about 279 days away. Fall's first freeze usually shows up around 09/17, roughly 102 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Manitou Springs in Zone 5b (-15 to -10°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
Manitou Springs's growing season runs out in roughly 3 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
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.
Manitou Springs against the rest of the dataset
At roughly 102 frost-free days, Manitou Springs places 39,649 of 40,283 ZIP codes in this dataset. Within CO, it ranks 521 of 624.
Learn more
Two guides worth reading on 80829: local microclimates, on what one yard in Manitou Springs can differ from the 80829 normal, and zone vs. frost date, on why Zone 5b and Manitou Springs's frost date answer different questions.