Lima, OH 45804 Frost Dates
Lima, OH: when does the frost end?
The last spring frost here typically falls around 04/22, about 237 days from today. Fall's first freeze usually shows up around 10/22, roughly 181 days after the last spring frost.
Zone 6a (-10 to -5°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 Lima, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Lima's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/22 isn't a guarantee
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 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.
Lima against the rest of the dataset
Lima's growing season runs about 181 days, ranking 24,444 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 757 of 1,383.
Learn more
Before leaning on 45804's figures: local microclimates explains what one yard in Lima can differ from the 45804 normal, while zone vs. frost date explains why Zone 6a and Lima's frost date answer different questions.