Rye, CO 81040 Frost Dates
Rye, CO: when does the frost end?
Around 05/27 is the usual last spring frost, about 272 days away. Fall's first freeze usually shows up around 09/25, roughly 119 days after the last spring frost.
Zone 6a (-10 to -5°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 Rye, not a forecast for this year.
Stretching the season past the first frost
With roughly 4 weeks until Rye'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
05/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/10 and only about 1 year in 10 sees frost after that.
Rye against the rest of the dataset
About 119 days separate Rye's last and first frost, putting it 39,183 of 40,283 ZIP codes nationally. Within CO, it ranks 469 of 624.
Learn more
Before leaning on 81040's figures: the frost range explains how to read the range around Rye's dates instead of trusting one, while local microclimates explains what one yard in Rye can differ from the 81040 normal.