Hatboro, PA 19090 Frost Dates
Hatboro, PA: when does the frost end?
Typically, the last spring freeze lands around 04/11, roughly 226 days out. Fall's first freeze usually shows up around 11/01, roughly 205 days after the last spring frost.
Hatboro sits in USDA Zone 7b (5 to 10°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 9 weeks until Hatboro's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/11 isn't a guarantee
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/27 and only about 1 year in 10 sees frost after that.
Hatboro against the rest of the dataset
About 205 days separate Hatboro's last and first frost, putting it 16,225 of 40,283 ZIP codes nationally. Within PA, it ranks 137 of 2,088.
Learn more
Before leaning on 19090's figures: the frost range explains how to read the range around Hatboro's dates instead of trusting one, while local microclimates explains what one yard in Hatboro can differ from the 19090 normal.