Fort Loramie, OH 45845 Frost Dates
When can you plant in Fort Loramie, OH?
Around 04/27 is the usual last spring frost, about 242 days away. The first fall frost typically arrives around 10/20, about 175 frost-free days later.
The USDA Plant Hardiness Zone Map puts Fort Loramie 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
About 8 weeks of growing season left in Fort Loramie before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fort Loramie compares
Fort Loramie's growing season runs about 175 days, ranking 27,027 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 1,039 of 1,383.
Learn more
local microclimates covers what one yard in Fort Loramie can differ from the 45845 normal. zone vs. frost date covers why Zone 6a and Fort Loramie's frost date answer different questions.