Middleport, PA 17925 Frost Dates
17925, near Middleport, 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.
Zone 6b (-5 to 0°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 Middleport, not a forecast for this year.
Stretching the season past the first frost
Middleport'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.
Why 04/30 isn't a guarantee
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.
Middleport against the rest of the dataset
At roughly 175 frost-free days, Middleport places 27,205 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,255 of 2,088.
Learn more
Two guides worth reading on 17925: local microclimates, on what one yard in Middleport can differ from the 17925 normal, and zone vs. frost date, on why Zone 6b and Middleport's frost date answer different questions.