Port Matilda, PA 16870 Frost Dates
16870, near Port Matilda, PA: the frost window
The last spring frost here typically falls around 04/20, about 235 days from today. Fall's first freeze usually shows up around 10/26, roughly 187 days after the last spring frost.
Zone 6b (-5 to 0°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 Port Matilda, not a forecast for this year.
Stretching the season past the first frost
Port Matilda'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 Port Matilda'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.
Port Matilda against the rest of the dataset
About 187 days separate Port Matilda's last and first frost, putting it 22,541 of 40,283 ZIP codes nationally. Within PA, it ranks 620 of 2,088.
Learn more
Two guides worth reading on 16870: zone vs. frost date, on why Zone 6b and Port Matilda's frost date answer different questions, and the frost range, on how to read the range around Port Matilda's dates instead of trusting one.