Manassa, CO 81141 Frost Dates
Manassa, CO: when does the frost end?
The last spring frost here typically falls around 05/28, about 273 days from today. Fall's first freeze usually shows up around 09/21, roughly 115 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Manassa in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 3 weeks until Manassa'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
05/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/11 and only about 1 year in 10 sees frost after that.
Manassa against the rest of the dataset
At roughly 115 frost-free days, Manassa places 39,322 of 40,283 ZIP codes in this dataset. Within CO, it ranks 480 of 624.
Learn more
Before leaning on 81141's figures: the frost range explains how to read the range around Manassa's dates instead of trusting one, while local microclimates explains what one yard in Manassa can differ from the 81141 normal.