East Pittsburgh, PA 15112 Frost Dates
15112, near East Pittsburgh, PA: the frost window
The last spring frost here typically falls around 05/02, about 247 days from today. 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 East Pittsburgh, not a forecast for this year.
Stretching the season past the first frost
East Pittsburgh'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.
East Pittsburgh against the rest of the dataset
East Pittsburgh's growing season runs about 170 days, ranking 29,059 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,485 of 2,088.
Learn more
Two guides worth reading on 15112: local microclimates, on what one yard in East Pittsburgh can differ from the 15112 normal, and zone vs. frost date, on why Zone 6b and East Pittsburgh's frost date answer different questions.