Seaman, OH 45679 Frost Dates
45679, near Seaman, OH: the frost window
Typically, the last spring freeze lands around 04/18, roughly 233 days out. Fall's first freeze usually shows up around 10/30, roughly 195 days after the last spring frost.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Seaman, not a forecast for this year.
Stretching the season past the first frost
Seaman'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.
The actual range around Seaman's last frost
04/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 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.
Seaman against the rest of the dataset
Seaman's growing season runs about 195 days, ranking 19,311 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 141 of 1,383.
Learn more
Two guides worth reading on 45679: the frost range, on how to read the range around Seaman's dates instead of trusting one, and local microclimates, on what one yard in Seaman can differ from the 45679 normal.