Durango, CO 81329 Frost Dates
81329, near Durango, CO: the frost window
Around 06/01 is the usual last spring frost, about 277 days away. Fall's first freeze usually shows up around 09/27, roughly 116 days after the last spring frost.
Durango sits in USDA Zone 6a (-10 to -5°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.
Stretching the season past the first frost
Durango's growing season runs out in roughly 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
06/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/19 and only about 1 year in 10 sees frost after that.
Durango against the rest of the dataset
At roughly 116 frost-free days, Durango places 39,273 of 40,283 ZIP codes in this dataset. Within CO, it ranks 475 of 624.
Learn more
Two guides worth reading on 81329: zone vs. frost date, on why Zone 6a and Durango's frost date answer different questions, and the frost range, on how to read the range around Durango's dates instead of trusting one.