West Newton, PA 15089 Frost Dates
15089, near West Newton, 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.
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 West Newton, not a forecast for this year.
Stretching the season past the first frost
West Newton'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 05/02 isn't a guarantee
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.
West Newton against the rest of the dataset
West Newton's growing season runs about 170 days, ranking 29,032 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,480 of 2,088.
Learn more
Two guides worth reading on 15089: local microclimates, on what one yard in West Newton can differ from the 15089 normal, and zone vs. frost date, on why Zone 6b and West Newton's frost date answer different questions.