Raymer (New Raymer), CO 80742 Frost Dates
Raymer (New Raymer), CO: when does the frost end?
Around 05/09 is the usual last spring frost, about 254 days away. Fall's first freeze usually shows up around 10/04, roughly 146 days after the last spring frost.
Raymer (New Raymer) sits in USDA Zone 5a (-20 to -15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 5 weeks until Raymer (New Raymer)'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
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Raymer (New Raymer) against the rest of the dataset
Raymer (New Raymer)'s growing season runs about 146 days, ranking 36,143 of 40,283 US ZIP codes measured here, longest to shortest. Within CO, it ranks 366 of 624.
Learn more
Before leaning on 80742's figures: zone vs. frost date explains why Zone 5a and Raymer (New Raymer)'s frost date answer different questions, while the frost range explains how to read the range around Raymer (New Raymer)'s dates instead of trusting one.