Shamokin Dam, PA 17831 Frost Dates
When can you plant in Shamokin Dam, PA?
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/16, about 172 frost-free days later.
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.
What to do before the first frost
About 7 weeks of growing season left in Shamokin Dam before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/13 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Shamokin Dam compares
Shamokin Dam's growing season runs about 172 days, ranking 28,366 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,372 of 2,088.
Learn more
local microclimates covers what one yard in Shamokin Dam can differ from the 17831 normal. zone vs. frost date covers why Zone 6b and Shamokin Dam's frost date answer different questions.