Millersville, PA 17611 Frost Dates
Millersville, 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 10/10, roughly 162 days after the last spring frost.
Millersville sits in USDA Zone 7a (0 to 5°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 6 weeks until Millersville'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
04/30 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 05/13 and only about 1 year in 10 sees frost after that.
Millersville against the rest of the dataset
Millersville's growing season runs about 162 days, ranking 31,693 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,654 of 2,088.
Learn more
Before leaning on 17611's figures: local microclimates explains what one yard in Millersville can differ from the 17611 normal, while zone vs. frost date explains why Zone 7a and Millersville's frost date answer different questions.