Punxsutawney, PA 15764 Frost Dates
Punxsutawney, PA: when does the frost end?
Typically, the last spring freeze lands around 05/10, roughly 255 days out. Fall's first freeze usually shows up around 10/12, roughly 155 days after the last spring frost.
Punxsutawney sits in USDA Zone 6a (-10 to -5°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
With roughly 6 weeks until Punxsutawney's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/10 isn't a guarantee
05/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/28 and only about 1 year in 10 sees frost after that.
Punxsutawney against the rest of the dataset
Punxsutawney's growing season runs about 155 days, ranking 33,956 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,772 of 2,088.
Learn more
Before leaning on 15764's figures: local microclimates explains what one yard in Punxsutawney can differ from the 15764 normal, while zone vs. frost date explains why Zone 6a and Punxsutawney's frost date answer different questions.