Berlin, PA 15530 Frost Dates
Berlin, PA: when does the frost end?
Around 05/04 is the usual last spring frost, about 249 days away. Fall's first freeze usually shows up around 10/10, roughly 158 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Berlin 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
With roughly 6 weeks until Berlin's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/21 and only about 1 year in 10 sees frost after that.
Berlin against the rest of the dataset
About 158 days separate Berlin's last and first frost, putting it 33,004 of 40,283 ZIP codes nationally. Within PA, it ranks 1,739 of 2,088.
Learn more
Before leaning on 15530's figures: local microclimates explains what one yard in Berlin can differ from the 15530 normal, while zone vs. frost date explains why Zone 6a and Berlin's frost date answer different questions.