Kittanning, PA 16261 Frost Dates
When can you plant in Kittanning, PA?
Typically, the last spring freeze lands around 05/10, roughly 255 days out. The first fall frost typically arrives around 10/12, about 155 frost-free days later.
The USDA Plant Hardiness Zone Map puts Kittanning in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 6 weeks of growing season left in Kittanning before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Kittanning's last frost
05/10 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kittanning compares
Kittanning's growing season runs about 155 days, ranking 33,970 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,780 of 2,088.
Learn more
zone vs. frost date covers why Zone 6b and Kittanning's frost date answer different questions. the frost range covers how to read the range around Kittanning's dates instead of trusting one.