Stratton, CO 80824 Frost Dates
Stratton, CO: when does the frost end?
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 10/09, roughly 158 days after the last spring frost.
Stratton sits in USDA Zone 5b (-15 to -10°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 Stratton'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
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Stratton against the rest of the dataset
About 158 days separate Stratton's last and first frost, putting it 33,095 of 40,283 ZIP codes nationally. Within CO, it ranks 170 of 624.
Learn more
Before leaning on 80824's figures: local microclimates explains what one yard in Stratton can differ from the 80824 normal, while zone vs. frost date explains why Zone 5b and Stratton's frost date answer different questions.