Dover, OH 44622 Frost Dates
44622, near Dover, OH: the frost window
Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/15, roughly 167 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 Dover, not a forecast for this year.
Stretching the season past the first frost
Dover's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Dover against the rest of the dataset
At roughly 167 frost-free days, Dover places 29,903 of 40,283 ZIP codes in this dataset. Within OH, it ranks 1,234 of 1,383.
Learn more
Two guides worth reading on 44622: zone vs. frost date, on why Zone 6b and Dover's frost date answer different questions, and the frost range, on how to read the range around Dover's dates instead of trusting one.