Coldwater, OH 45828 Frost Dates
Coldwater, OH: when does the frost end?
Around 04/27 is the usual last spring frost, about 242 days away. Fall's first freeze usually shows up around 10/19, roughly 175 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Coldwater in Zone 6a (-10 to -5°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
With roughly 7 weeks until Coldwater's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Coldwater against the rest of the dataset
About 175 days separate Coldwater's last and first frost, putting it 26,889 of 40,283 ZIP codes nationally. Within OH, it ranks 1,021 of 1,383.
Learn more
Before leaning on 45828's figures: local microclimates explains what one yard in Coldwater can differ from the 45828 normal, while zone vs. frost date explains why Zone 6a and Coldwater's frost date answer different questions.