Dolores, CO 81327 Frost Dates
Dolores, CO: when does the frost end?
The last spring frost here typically falls around 05/15, about 260 days from today. Fall's first freeze usually shows up around 10/08, roughly 147 days after the last spring frost.
Dolores 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.
Stretching the season past the first frost
With roughly 6 weeks until Dolores's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/31 and only about 1 year in 10 sees frost after that.
Dolores against the rest of the dataset
At roughly 147 frost-free days, Dolores places 35,943 of 40,283 ZIP codes in this dataset. Within CO, it ranks 348 of 624.
Learn more
Before leaning on 81327's figures: local microclimates explains what one yard in Dolores can differ from the 81327 normal, while zone vs. frost date explains why Zone 6b and Dolores's frost date answer different questions.