Merriman, NE 69218 Frost Dates
Frost dates for Merriman, NE, ZIP 69218
Typically, the last spring freeze lands around 05/13, roughly 258 days out. The first fall frost typically arrives around 10/01, about 138 frost-free days later.
The USDA Plant Hardiness Zone Map puts Merriman in Zone 5a (-20 to -15°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 5a around Merriman 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
05/13 is the middle of 30 years of NOAA records, not a promise. Plant by 05/02 and you're betting against frost in roughly 9 years out of 10. 05/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Merriman compares
Merriman's growing season runs about 138 days, ranking 37,479 of 40,283 US ZIP codes measured here, longest to shortest. Within NE, it ranks 592 of 605.
Learn more
zone vs. frost date explains why Zone 5a and Merriman's frost date answer different questions, and the frost range explains how to read the range around Merriman's dates instead of trusting one.