Upper Sandusky, OH 43351 Frost Dates
Frost dates for Upper Sandusky, OH, ZIP 43351
Typically, the last spring freeze lands around 04/29, roughly 244 days out. The first fall frost typically arrives around 10/17, about 171 frost-free days later.
The USDA Plant Hardiness Zone Map puts Upper Sandusky 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 Upper Sandusky 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 Upper Sandusky's last frost
04/29 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. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Upper Sandusky compares
Upper Sandusky's growing season runs about 171 days, ranking 28,624 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 1,126 of 1,383.
Learn more
local microclimates explains what one yard in Upper Sandusky can differ from the 43351 normal, and zone vs. frost date explains why Zone 6a and Upper Sandusky's frost date answer different questions.