FrostDateCheck

Caldwell, OH 43724 Frost Dates

43724, near Caldwell, OH: the frost window

Zone 6b

Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/14, roughly 167 days after the last spring frost.

The USDA Plant Hardiness Zone Map puts Caldwell 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

Caldwell'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.

The actual range around Caldwell's last frost

04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.

Caldwell against the rest of the dataset

About 167 days separate Caldwell's last and first frost, putting it 30,035 of 40,283 ZIP codes nationally. Within OH, it ranks 1,283 of 1,383.

Learn more

Two guides worth reading on 43724: local microclimates, on what one yard in Caldwell can differ from the 43724 normal, and zone vs. frost date, on why Zone 6b and Caldwell's frost date answer different questions.