Harrisburg, AR 72432 Frost Dates
When can you plant in Harrisburg, AR?
Typically, the last spring freeze lands around 03/23, roughly 207 days out. The first fall frost typically arrives around 11/09, about 230 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 10 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.
The actual range around Harrisburg's last frost
03/23 is the middle of 30 years of NOAA records, not a promise. Plant by 03/07 and you're betting against frost in roughly 9 years out of 10. 04/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Harrisburg compares
About 230 days separate Harrisburg's last and first frost, putting it 10,418 of 40,283 ZIP codes nationally. Within AR, it ranks 233 of 687.
Learn more
local microclimates covers what one yard in Harrisburg can differ from the 72432 normal. zone vs. frost date covers why Zone 8a and Harrisburg's frost date answer different questions.