Somerset, PA 15510 Frost Dates
Somerset, PA: when does the frost end?
Around 04/29 is the usual last spring frost, about 244 days away. Fall's first freeze usually shows up around 10/18, roughly 171 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Somerset 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 7 weeks until Somerset's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Somerset's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Somerset against the rest of the dataset
At roughly 171 frost-free days, Somerset places 28,630 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,421 of 2,088.
Learn more
Before leaning on 15510's figures: the frost range explains how to read the range around Somerset's dates instead of trusting one, while local microclimates explains what one yard in Somerset can differ from the 15510 normal.