Warren, PA 16365 Frost Dates
16365, near Warren, PA: the frost window
Around 05/22 is the usual last spring frost, about 267 days away. Fall's first freeze usually shows up around 09/30, roughly 131 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Warren in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Warren's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/05 and only about 1 year in 10 sees frost after that.
Warren against the rest of the dataset
About 131 days separate Warren's last and first frost, putting it 38,255 of 40,283 ZIP codes nationally. Within PA, it ranks 2,064 of 2,088.
Learn more
Two guides worth reading on 16365: local microclimates, on what one yard in Warren can differ from the 16365 normal, and zone vs. frost date, on why Zone 6a and Warren's frost date answer different questions.