Pioneer, OH 49239 Frost Dates
Frost dates for Pioneer, OH, ZIP 49239
Typically, the last spring freeze lands around 05/03, roughly 248 days out. The first fall frost typically arrives around 10/12, about 161 frost-free days later.
The USDA Plant Hardiness Zone Map puts Pioneer in Zone 6a (-10 to -5°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 6a around Pioneer has about 6 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
05/03 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pioneer compares
Pioneer's growing season runs about 161 days, ranking 32,088 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 1,381 of 1,383.
Learn more
zone vs. frost date explains why Zone 6a and Pioneer's frost date answer different questions, and the frost range explains how to read the range around Pioneer's dates instead of trusting one.