Carmichaels, PA 15320 Frost Dates
Frost dates for Carmichaels, PA, ZIP 15320
The last spring frost here typically falls around 04/28, about 243 days from today. The first fall frost typically arrives around 10/21, about 175 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 Carmichaels, not a forecast for this year.
What to do before the first frost
Zone 6b around Carmichaels has about 8 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.
Why 04/28 isn't a guarantee
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/15 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Carmichaels compares
Carmichaels's growing season runs about 175 days, ranking 27,196 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,250 of 2,088.
Learn more
local microclimates explains what one yard in Carmichaels can differ from the 15320 normal, and zone vs. frost date explains why Zone 6b and Carmichaels's frost date answer different questions.