Curwensville, PA 16837 Frost Dates
Curwensville, PA: when does the frost end?
Typically, the last spring freeze lands around 05/04, roughly 249 days out. Fall's first freeze usually shows up around 10/11, roughly 161 days after the last spring frost.
Curwensville 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 Curwensville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Curwensville against the rest of the dataset
At roughly 161 frost-free days, Curwensville places 32,056 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,678 of 2,088.
Learn more
Before leaning on 16837's figures: local microclimates explains what one yard in Curwensville can differ from the 16837 normal, while zone vs. frost date explains why Zone 6a and Curwensville's frost date answer different questions.