Portland, PA 07825 Frost Dates
07825, near Portland, PA: the frost window
Around 04/25 is the usual last spring frost, about 240 days away. Fall's first freeze usually shows up around 10/19, roughly 175 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Portland 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
Portland's growing season runs out in roughly 7 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
04/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Portland against the rest of the dataset
At roughly 175 frost-free days, Portland places 27,171 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,244 of 2,088.
Learn more
Two guides worth reading on 07825: zone vs. frost date, on why Zone 6b and Portland's frost date answer different questions, and the frost range, on how to read the range around Portland's dates instead of trusting one.