Gallipolis, OH 45643 Frost Dates
45643, near Gallipolis, OH: the frost window
Around 04/18 is the usual last spring frost, about 233 days away. Fall's first freeze usually shows up around 10/29, roughly 192 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Gallipolis 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
Gallipolis'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.
Why 04/18 isn't a guarantee
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 05/05 and only about 1 year in 10 sees frost after that.
Gallipolis against the rest of the dataset
Gallipolis's growing season runs about 192 days, ranking 20,338 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 254 of 1,383.
Learn more
Two guides worth reading on 45643: zone vs. frost date, on why Zone 6b and Gallipolis's frost date answer different questions, and the frost range, on how to read the range around Gallipolis's dates instead of trusting one.