Tionesta, PA 16321 Frost Dates
Tionesta, PA: when does the frost end?
The last spring frost here typically falls around 05/22, about 267 days from today. Fall's first freeze usually shows up around 09/30, roughly 131 days after the last spring frost.
Zone 6a (-10 to -5°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 Tionesta, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Tionesta's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Tionesta's last frost
05/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/05 and only about 1 year in 10 sees frost after that.
Tionesta against the rest of the dataset
At roughly 131 frost-free days, Tionesta places 38,327 of 40,283 ZIP codes in this dataset. Within PA, it ranks 2,081 of 2,088.
Learn more
Before leaning on 16321's figures: local microclimates explains what one yard in Tionesta can differ from the 16321 normal, while zone vs. frost date explains why Zone 6a and Tionesta's frost date answer different questions.