White Oak, PA 15131 Frost Dates
15131, near White Oak, PA: the frost window
Around 05/02 is the usual last spring frost, about 247 days away. Fall's first freeze usually shows up around 10/20, roughly 170 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts White Oak 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
White Oak'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
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 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.
White Oak against the rest of the dataset
About 170 days separate White Oak's last and first frost, putting it 28,958 of 40,283 ZIP codes nationally. Within PA, it ranks 1,459 of 2,088.
Learn more
Two guides worth reading on 15131: zone vs. frost date, on why Zone 6b and White Oak's frost date answer different questions, and the frost range, on how to read the range around White Oak's dates instead of trusting one.