Cambridge Springs, PA 16403 Frost Dates
Frost dates for Cambridge Springs, PA, ZIP 16403
The last spring frost here typically falls around 04/30, about 245 days from today. The first fall frost typically arrives around 10/23, about 175 frost-free days later.
The USDA Plant Hardiness Zone Map puts Cambridge Springs in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6a around Cambridge Springs 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 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Cambridge Springs compares
At roughly 175 frost-free days, Cambridge Springs places 26,963 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,171 of 2,088.
Learn more
local microclimates explains what one yard in Cambridge Springs can differ from the 16403 normal, and zone vs. frost date explains why Zone 6a and Cambridge Springs's frost date answer different questions.