Harbor View, OH 43603 Frost Dates
43603, near Harbor View, OH: the frost window
Around 04/20 is the usual last spring frost, about 235 days away. Fall's first freeze usually shows up around 10/27, roughly 188 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Harbor View 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
Harbor View'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 Harbor View's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Harbor View against the rest of the dataset
At roughly 188 frost-free days, Harbor View places 22,241 of 40,283 ZIP codes in this dataset. Within OH, it ranks 417 of 1,383.
Learn more
Two guides worth reading on 43603: local microclimates, on what one yard in Harbor View can differ from the 43603 normal, and zone vs. frost date, on why Zone 6b and Harbor View's frost date answer different questions.