Mount Pleasant, PA 15674 Frost Dates
Frost dates for Mount Pleasant, PA, ZIP 15674
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/13, about 164 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 Mount Pleasant, not a forecast for this year.
What to do before the first frost
Zone 6b around Mount Pleasant has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mount Pleasant compares
At roughly 164 frost-free days, Mount Pleasant places 30,925 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,569 of 2,088.
Learn more
the frost range explains how to read the range around Mount Pleasant's dates instead of trusting one, and local microclimates explains what one yard in Mount Pleasant can differ from the 15674 normal.