Spartanburg, SC 29303 Frost Dates
Frost dates for Spartanburg, SC, ZIP 29303
Typically, the last spring freeze lands around 03/28, roughly 212 days out. The first fall frost typically arrives around 11/07, about 224 frost-free days later.
Zone 8a (10 to 15°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 Spartanburg, not a forecast for this year.
What to do before the first frost
Zone 8a around Spartanburg has about 10 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.
The actual range around Spartanburg's last frost
03/28 is the middle of 30 years of NOAA records, not a promise. Plant by 03/10 and you're betting against frost in roughly 9 years out of 10. 04/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Spartanburg compares
Spartanburg's growing season runs about 224 days, ranking 11,734 of 40,283 US ZIP codes measured here, longest to shortest. Within SC, it ranks 384 of 519.
Learn more
local microclimates explains what one yard in Spartanburg can differ from the 29303 normal, and zone vs. frost date explains why Zone 8a and Spartanburg's frost date answer different questions.