Starrucca, PA 18437 Frost Dates
When can you plant in Starrucca, PA?
Typically, the last spring freeze lands around 05/14, roughly 259 days out. The first fall frost typically arrives around 10/01, about 140 frost-free days later.
Zone 5b (-15 to -10°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 Starrucca, not a forecast for this year.
What to do before the first frost
About 5 weeks of growing season left in Starrucca before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 05/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Starrucca compares
About 140 days separate Starrucca's last and first frost, putting it 37,180 of 40,283 ZIP codes nationally. Within PA, it ranks 2,041 of 2,088.
Learn more
local microclimates covers what one yard in Starrucca can differ from the 18437 normal. zone vs. frost date covers why Zone 5b and Starrucca's frost date answer different questions.