Mount Vernon, OH 43050 Frost Dates
Mount Vernon, OH: when does the frost end?
The last spring frost here typically falls around 04/27, about 242 days from today. Fall's first freeze usually shows up around 10/17, roughly 172 days after the last spring frost.
Mount Vernon sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 7 weeks until Mount Vernon'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 04/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
Mount Vernon against the rest of the dataset
At roughly 172 frost-free days, Mount Vernon places 28,206 of 40,283 ZIP codes in this dataset. Within OH, it ranks 1,109 of 1,383.
Learn more
Before leaning on 43050's figures: local microclimates explains what one yard in Mount Vernon can differ from the 43050 normal, while zone vs. frost date explains why Zone 6a and Mount Vernon's frost date answer different questions.