Green Mountain Falls, CO 80933 Frost Dates
Green Mountain Falls, CO: when does the frost end?
The last spring frost here typically falls around 06/03, about 279 days from today. Fall's first freeze usually shows up around 09/17, roughly 102 days after the last spring frost.
Green Mountain Falls 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
With roughly 3 weeks until Green Mountain Falls's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Green Mountain Falls's last frost
06/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/23 and only about 1 year in 10 sees frost after that.
Green Mountain Falls against the rest of the dataset
About 102 days separate Green Mountain Falls's last and first frost, putting it 39,669 of 40,283 ZIP codes nationally. Within CO, it ranks 528 of 624.
Learn more
Before leaning on 80933's figures: zone vs. frost date explains why Zone 6a and Green Mountain Falls's frost date answer different questions, while the frost range explains how to read the range around Green Mountain Falls's dates instead of trusting one.