Montrose, CO 81402 Frost Dates
When can you plant in Montrose, CO?
Typically, the last spring freeze lands around 04/28, roughly 243 days out. The first fall frost typically arrives around 10/14, about 167 frost-free days later.
Montrose sits in USDA Zone 6b (-5 to 0°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 7 weeks of growing season left in Montrose before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/13 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Montrose compares
At roughly 167 frost-free days, Montrose places 29,887 of 40,283 ZIP codes in this dataset. Within CO, it ranks 24 of 624.
Learn more
local microclimates covers what one yard in Montrose can differ from the 81402 normal. zone vs. frost date covers why Zone 6b and Montrose's frost date answer different questions.