Sumner, NE 68878 Frost Dates
Frost dates for Sumner, NE, ZIP 68878
Around 05/10 is the usual last spring frost, about 255 days away. The first fall frost typically arrives around 10/01, about 145 frost-free days later.
The USDA Plant Hardiness Zone Map puts Sumner in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 5b around Sumner has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/10 is the middle of 30 years of NOAA records, not a promise. Plant by 04/27 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sumner compares
Sumner's growing season runs about 145 days, ranking 36,280 of 40,283 US ZIP codes measured here, longest to shortest. Within NE, it ranks 555 of 605.
Learn more
the frost range explains how to read the range around Sumner's dates instead of trusting one, and local microclimates explains what one yard in Sumner can differ from the 68878 normal.