Rose Valley, PA 19086 Frost Dates
Frost dates for Rose Valley, PA, ZIP 19086
The last spring frost here typically falls around 04/02, about 217 days from today. The first fall frost typically arrives around 11/10, about 224 frost-free days later.
The USDA Plant Hardiness Zone Map puts Rose Valley in Zone 7b (5 to 10°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 7b around Rose Valley has about 11 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
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/19 and you're betting against frost in roughly 9 years out of 10. 04/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rose Valley compares
Rose Valley's growing season runs about 224 days, ranking 11,932 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 45 of 2,088.
Learn more
zone vs. frost date explains why Zone 7b and Rose Valley's frost date answer different questions, and the frost range explains how to read the range around Rose Valley's dates instead of trusting one.