Adelphi, OH 43101 Frost Dates
43101, near Adelphi, OH: the frost window
The last spring frost here typically falls around 04/17, about 232 days from today. Fall's first freeze usually shows up around 10/28, roughly 192 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Adelphi in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Adelphi's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/04 and only about 1 year in 10 sees frost after that.
Adelphi against the rest of the dataset
About 192 days separate Adelphi's last and first frost, putting it 20,554 of 40,283 ZIP codes nationally. Within OH, it ranks 273 of 1,383.
Learn more
Two guides worth reading on 43101: zone vs. frost date, on why Zone 6b and Adelphi's frost date answer different questions, and the frost range, on how to read the range around Adelphi's dates instead of trusting one.