Shamokin Dam, PA 17876 Frost Dates
17876, near Shamokin Dam, PA: the frost window
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/13, roughly 166 days after the last spring frost.
Zone 6b (-5 to 0°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 Shamokin Dam, not a forecast for this year.
Stretching the season past the first frost
Shamokin Dam's growing season runs out in roughly 7 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 Shamokin Dam's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Shamokin Dam against the rest of the dataset
Shamokin Dam's growing season runs about 166 days, ranking 30,392 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,533 of 2,088.
Learn more
Two guides worth reading on 17876: the frost range, on how to read the range around Shamokin Dam's dates instead of trusting one, and local microclimates, on what one yard in Shamokin Dam can differ from the 17876 normal.