McAdoo, PA 18231 Frost Dates
18231, near McAdoo, PA: the frost window
Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/22, roughly 175 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts McAdoo in Zone 6b (-5 to 0°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
McAdoo'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
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
McAdoo against the rest of the dataset
At roughly 175 frost-free days, McAdoo places 26,956 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,167 of 2,088.
Learn more
Two guides worth reading on 18231: local microclimates, on what one yard in McAdoo can differ from the 18231 normal, and zone vs. frost date, on why Zone 6b and McAdoo's frost date answer different questions.