Mahanoy City, PA 18220 Frost Dates
Mahanoy City, PA: when does the frost end?
Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/22, roughly 175 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Mahanoy City in Zone 6b (-5 to 0°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 8 weeks until Mahanoy City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Mahanoy City's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Mahanoy City against the rest of the dataset
About 175 days separate Mahanoy City's last and first frost, putting it 26,911 of 40,283 ZIP codes nationally. Within PA, it ranks 1,145 of 2,088.
Learn more
Before leaning on 18220's figures: zone vs. frost date explains why Zone 6b and Mahanoy City's frost date answer different questions, while the frost range explains how to read the range around Mahanoy City's dates instead of trusting one.