Cortland, OH 44410 Frost Dates
Cortland, OH: when does the frost end?
Typically, the last spring freeze lands around 05/01, roughly 246 days out. Fall's first freeze usually shows up around 10/17, roughly 167 days after the last spring frost.
Cortland 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 Cortland's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/01 isn't a guarantee
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 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.
Cortland against the rest of the dataset
Cortland's growing season runs about 167 days, ranking 29,938 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 1,252 of 1,383.
Learn more
Before leaning on 44410's figures: the frost range explains how to read the range around Cortland's dates instead of trusting one, while local microclimates explains what one yard in Cortland can differ from the 44410 normal.