Kremmling, CO 80459 Frost Dates
When can you plant in Kremmling, CO?
Typically, the last spring freeze lands around 06/14, roughly 290 days out. The first fall frost typically arrives around 09/05, about 80 frost-free days later.
Zone 5a (-20 to -15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Kremmling, not a forecast for this year.
What to do before the first frost
About 1 week of growing season left in Kremmling before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Kremmling's last frost
06/14 is the middle of 30 years of NOAA records, not a promise. Plant by 06/01 and you're betting against frost in roughly 9 years out of 10. 06/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kremmling compares
At roughly 80 frost-free days, Kremmling places 40,045 of 40,283 ZIP codes in this dataset. Within CO, it ranks 568 of 624.
Learn more
zone vs. frost date covers why Zone 5a and Kremmling's frost date answer different questions. the frost range covers how to read the range around Kremmling's dates instead of trusting one.