McDonald, PA 15057 Frost Dates
McDonald, PA: when does the frost end?
Around 04/23 is the usual last spring frost, about 238 days away. Fall's first freeze usually shows up around 10/23, roughly 181 days after the last spring frost.
McDonald 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 8 weeks until McDonald's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around McDonald's last frost
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
McDonald against the rest of the dataset
McDonald's growing season runs about 181 days, ranking 24,568 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 828 of 2,088.
Learn more
Before leaning on 15057's figures: zone vs. frost date explains why Zone 6b and McDonald's frost date answer different questions, while the frost range explains how to read the range around McDonald's dates instead of trusting one.