Murrysville, PA 15668 Frost Dates
15668, near Murrysville, PA: the frost window
Around 04/29 is the usual last spring frost, about 244 days away. Fall's first freeze usually shows up around 10/20, roughly 171 days after the last spring frost.
Murrysville sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Murrysville'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.
The actual range around Murrysville's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Murrysville against the rest of the dataset
At roughly 171 frost-free days, Murrysville places 28,603 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,419 of 2,088.
Learn more
Two guides worth reading on 15668: zone vs. frost date, on why Zone 6b and Murrysville's frost date answer different questions, and the frost range, on how to read the range around Murrysville's dates instead of trusting one.