Estes Park, CO 80515 Frost Dates
When can you plant in Estes Park, CO?
Typically, the last spring freeze lands around 05/30, roughly 275 days out. The first fall frost typically arrives around 09/17, about 109 frost-free days later.
Estes Park sits in USDA Zone 5b (-15 to -10°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.
What to do before the first frost
About 3 weeks of growing season left in Estes Park before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Estes Park's last frost
05/30 is the middle of 30 years of NOAA records, not a promise. Plant by 05/15 and you're betting against frost in roughly 9 years out of 10. 06/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Estes Park compares
Estes Park's growing season runs about 109 days, ranking 39,521 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 508 of 624.
Learn more
the frost range covers how to read the range around Estes Park's dates instead of trusting one. local microclimates covers what one yard in Estes Park can differ from the 80515 normal.