Harrisburg, NC 28075 Frost Dates
When can you plant in Harrisburg, NC?
Typically, the last spring freeze lands around 04/01, roughly 216 days out. The first fall frost typically arrives around 11/02, about 215 frost-free days later.
Harrisburg sits in USDA Zone 8a (10 to 15°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 9 weeks of growing season left in Harrisburg before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/01 isn't a guarantee
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/16 and you're betting against frost in roughly 9 years out of 10. 04/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Harrisburg compares
Harrisburg's growing season runs about 215 days, ranking 14,034 of 40,283 US ZIP codes measured here, longest to shortest. Within NC, it ranks 693 of 1,078.
Learn more
zone vs. frost date covers why Zone 8a and Harrisburg's frost date answer different questions. the frost range covers how to read the range around Harrisburg's dates instead of trusting one.