Roca, NE 68430 Frost Dates
Roca, NE: when does the frost end?
Around 04/23 is the usual last spring frost, about 238 days away. Fall's first freeze usually shows up around 10/12, roughly 170 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Roca in Zone 6a (-10 to -5°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 6 weeks until Roca'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
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Roca against the rest of the dataset
Roca's growing season runs about 170 days, ranking 29,240 of 40,283 US ZIP codes measured here, longest to shortest. Within NE, it ranks 220 of 605.
Learn more
Before leaning on 68430's figures: zone vs. frost date explains why Zone 6a and Roca's frost date answer different questions, while the frost range explains how to read the range around Roca's dates instead of trusting one.