Toledo, OH 43604 Frost Dates
43604, near Toledo, OH: the frost window
Typically, the last spring freeze lands around 04/20, roughly 235 days out. 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 Toledo 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
Toledo'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 Toledo'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.
Toledo against the rest of the dataset
Toledo's growing season runs about 188 days, ranking 21,777 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 356 of 1,383.
Learn more
Two guides worth reading on 43604: local microclimates, on what one yard in Toledo can differ from the 43604 normal, and zone vs. frost date, on why Zone 6b and Toledo's frost date answer different questions.