Riegelsville, PA 18930 Frost Dates
Riegelsville, 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 10/16, roughly 170 days after the last spring frost.
Riegelsville sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 7 weeks until Riegelsville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Riegelsville's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 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.
Riegelsville against the rest of the dataset
At roughly 170 frost-free days, Riegelsville places 29,138 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,496 of 2,088.
Learn more
Before leaning on 18930's figures: the frost range explains how to read the range around Riegelsville's dates instead of trusting one, while local microclimates explains what one yard in Riegelsville can differ from the 18930 normal.