Centre Hall, PA 16875 Frost Dates
16875, near Centre Hall, PA: the frost window
Typically, the last spring freeze lands around 04/20, roughly 235 days out. Fall's first freeze usually shows up around 10/26, roughly 187 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Centre Hall 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
Centre Hall's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Centre Hall's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Centre Hall against the rest of the dataset
At roughly 187 frost-free days, Centre Hall places 22,488 of 40,283 ZIP codes in this dataset. Within PA, it ranks 612 of 2,088.
Learn more
Two guides worth reading on 16875: the frost range, on how to read the range around Centre Hall's dates instead of trusting one, and local microclimates, on what one yard in Centre Hall can differ from the 16875 normal.