Houston, PA 15342 Frost Dates
When can you plant in Houston, PA?
Around 04/23 is the usual last spring frost, about 238 days away. The first fall frost typically arrives around 10/23, about 181 frost-free days later.
Houston sits in USDA Zone 6b (-5 to 0°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.
What to do before the first frost
About 8 weeks of growing season left in Houston before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/09 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Houston compares
At roughly 181 frost-free days, Houston places 24,633 of 40,283 ZIP codes in this dataset. Within PA, it ranks 835 of 2,088.
Learn more
zone vs. frost date covers why Zone 6b and Houston's frost date answer different questions. the frost range covers how to read the range around Houston's dates instead of trusting one.