Grand Junction, CO 81506 Frost Dates
Grand Junction, CO: when does the frost end?
The last spring frost here typically falls around 04/28, about 243 days from today. Fall's first freeze usually shows up around 10/16, roughly 171 days after the last spring frost.
Grand Junction sits in USDA Zone 7a (0 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 7 weeks until Grand Junction'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
04/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Grand Junction against the rest of the dataset
About 171 days separate Grand Junction's last and first frost, putting it 28,581 of 40,283 ZIP codes nationally. Within CO, it ranks 21 of 624.
Learn more
Before leaning on 81506's figures: the frost range explains how to read the range around Grand Junction's dates instead of trusting one, while local microclimates explains what one yard in Grand Junction can differ from the 81506 normal.