Hudson, CO 80642 Frost Dates
80642, near Hudson, CO: the frost window
The last spring frost here typically falls around 05/03, about 248 days from today. Fall's first freeze usually shows up around 10/07, roughly 155 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 Hudson, not a forecast for this year.
Stretching the season past the first frost
Hudson'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 Hudson's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/16 and only about 1 year in 10 sees frost after that.
Hudson against the rest of the dataset
Hudson's growing season runs about 155 days, ranking 34,002 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 250 of 624.
Learn more
Two guides worth reading on 80642: the frost range, on how to read the range around Hudson's dates instead of trusting one, and local microclimates, on what one yard in Hudson can differ from the 80642 normal.