Wiggins, CO 80649 Frost Dates
80649, near Wiggins, CO: the frost window
Typically, the last spring freeze lands around 05/06, roughly 251 days out. Fall's first freeze usually shows up around 10/06, roughly 153 days after the last spring frost.
Zone 5a (-20 to -15°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 Wiggins, not a forecast for this year.
Stretching the season past the first frost
Wiggins's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Wiggins's last frost
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Wiggins against the rest of the dataset
Wiggins's growing season runs about 153 days, ranking 34,547 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 276 of 624.
Learn more
Two guides worth reading on 80649: local microclimates, on what one yard in Wiggins can differ from the 80649 normal, and zone vs. frost date, on why Zone 5a and Wiggins's frost date answer different questions.