Marion, SC 29571 Frost Dates
Frost dates for Marion, SC, ZIP 29571
Around 03/22 is the usual last spring frost, about 206 days away. The first fall frost typically arrives around 11/11, about 234 frost-free days later.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Marion, not a forecast for this year.
What to do before the first frost
Zone 8b around Marion has about 11 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
03/22 is the middle of 30 years of NOAA records, not a promise. Plant by 02/28 and you're betting against frost in roughly 9 years out of 10. 04/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Marion compares
About 234 days separate Marion's last and first frost, putting it 9,726 of 40,283 ZIP codes nationally. Within SC, it ranks 268 of 519.
Learn more
zone vs. frost date explains why Zone 8b and Marion's frost date answer different questions, and the frost range explains how to read the range around Marion's dates instead of trusting one.