Gettysburg, OH 45328 Frost Dates
45328, near Gettysburg, OH: the frost window
Typically, the last spring freeze lands around 04/21, roughly 236 days out. Fall's first freeze usually shows up around 10/20, roughly 180 days after the last spring frost.
Gettysburg 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
Gettysburg's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/21 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.
Gettysburg against the rest of the dataset
At roughly 180 frost-free days, Gettysburg places 25,023 of 40,283 ZIP codes in this dataset. Within OH, it ranks 793 of 1,383.
Learn more
Two guides worth reading on 45328: local microclimates, on what one yard in Gettysburg can differ from the 45328 normal, and zone vs. frost date, on why Zone 6a and Gettysburg's frost date answer different questions.