Clearfield, PA 16873 Frost Dates
Clearfield, 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.
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 Clearfield, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Clearfield's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Clearfield's last frost
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.
Clearfield against the rest of the dataset
Clearfield's growing season runs about 161 days, ranking 32,024 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,676 of 2,088.
Learn more
Before leaning on 16873's figures: local microclimates explains what one yard in Clearfield can differ from the 16873 normal, while zone vs. frost date explains why Zone 6a and Clearfield's frost date answer different questions.