Victor, CO 80860 Frost Dates
Victor, CO: when does the frost end?
Around 06/03 is the usual last spring frost, about 279 days away. Fall's first freeze usually shows up around 09/17, roughly 102 days after the last spring frost.
Zone 5b (-15 to -10°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 Victor, not a forecast for this year.
Stretching the season past the first frost
With roughly 3 weeks until Victor's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Victor'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.
Victor against the rest of the dataset
About 102 days separate Victor's last and first frost, putting it 39,670 of 40,283 ZIP codes nationally. Within CO, it ranks 529 of 624.
Learn more
Before leaning on 80860's figures: zone vs. frost date explains why Zone 5b and Victor's frost date answer different questions, while the frost range explains how to read the range around Victor's dates instead of trusting one.