Johnstown, OH 43031 Frost Dates
Frost dates for Johnstown, OH, ZIP 43031
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/17, about 172 frost-free days later.
The USDA Plant Hardiness Zone Map puts Johnstown 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 Johnstown has about 7 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.
The actual range around Johnstown's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/13 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Johnstown compares
Johnstown's growing season runs about 172 days, ranking 28,273 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 1,111 of 1,383.
Learn more
zone vs. frost date explains why Zone 6a and Johnstown's frost date answer different questions, and the frost range explains how to read the range around Johnstown's dates instead of trusting one.