Estes Park, CO 80512 Frost Dates
80512, near Estes Park, CO: the frost window
Typically, the last spring freeze lands around 06/05, roughly 281 days out. Fall's first freeze usually shows up around 09/16, roughly 101 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Estes Park 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
Estes Park'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.
The actual range around Estes Park's last frost
06/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/20 and only about 1 year in 10 sees frost after that.
Estes Park against the rest of the dataset
About 101 days separate Estes Park's last and first frost, putting it 39,676 of 40,283 ZIP codes nationally. Within CO, it ranks 530 of 624.
Learn more
Two guides worth reading on 80512: zone vs. frost date, on why Zone 5b and Estes Park's frost date answer different questions, and the frost range, on how to read the range around Estes Park's dates instead of trusting one.