Dublin, PA 18942 Frost Dates
18942, near Dublin, PA: the frost window
Around 04/29 is the usual last spring frost, about 244 days away. Fall's first freeze usually shows up around 10/16, roughly 170 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Dublin 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
Dublin's growing season runs out in roughly 7 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 Dublin's last frost
04/29 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 05/15 and only about 1 year in 10 sees frost after that.
Dublin against the rest of the dataset
About 170 days separate Dublin's last and first frost, putting it 29,044 of 40,283 ZIP codes nationally. Within PA, it ranks 1,482 of 2,088.
Learn more
Two guides worth reading on 18942: local microclimates, on what one yard in Dublin can differ from the 18942 normal, and zone vs. frost date, on why Zone 6b and Dublin's frost date answer different questions.