Emlenton, PA 16373 Frost Dates
16373, near Emlenton, PA: the frost window
Typically, the last spring freeze lands around 05/15, roughly 260 days out. Fall's first freeze usually shows up around 10/03, roughly 140 days after the last spring frost.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Emlenton, not a forecast for this year.
Stretching the season past the first frost
Emlenton's growing season runs out in roughly 5 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 Emlenton's last frost
05/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/01 and only about 1 year in 10 sees frost after that.
Emlenton against the rest of the dataset
Emlenton's growing season runs about 140 days, ranking 37,117 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 2,010 of 2,088.
Learn more
Two guides worth reading on 16373: zone vs. frost date, on why Zone 6a and Emlenton's frost date answer different questions, and the frost range, on how to read the range around Emlenton's dates instead of trusting one.