Nederland, CO 80471 Frost Dates
Nederland, CO: when does the frost end?
The last spring frost here typically falls around 06/05, about 281 days from today. Fall's first freeze usually shows up around 09/16, roughly 103 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 Nederland, not a forecast for this year.
Stretching the season past the first frost
With roughly 3 weeks until Nederland's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Nederland's last frost
06/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/19 and only about 1 year in 10 sees frost after that.
Nederland against the rest of the dataset
About 103 days separate Nederland's last and first frost, putting it 39,622 of 40,283 ZIP codes nationally. Within CO, it ranks 516 of 624.
Learn more
Before leaning on 80471's figures: zone vs. frost date explains why Zone 5b and Nederland's frost date answer different questions, while the frost range explains how to read the range around Nederland's dates instead of trusting one.