Jefferson, OH 44047 Frost Dates
When can you plant in Jefferson, OH?
Typically, the last spring freeze lands around 05/02, roughly 247 days out. The first fall frost typically arrives around 10/21, about 171 frost-free days later.
The USDA Plant Hardiness Zone Map puts Jefferson 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 Jefferson before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/18 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Jefferson compares
At roughly 171 frost-free days, Jefferson places 28,654 of 40,283 ZIP codes in this dataset. Within OH, it ranks 1,133 of 1,383.
Learn more
the frost range covers how to read the range around Jefferson's dates instead of trusting one. local microclimates covers what one yard in Jefferson can differ from the 44047 normal.