Seneca, SC 29679 Frost Dates
Frost dates for Seneca, SC, ZIP 29679
The last spring frost here typically falls around 03/21, about 205 days from today. The first fall frost typically arrives around 11/11, about 236 frost-free days later.
Seneca 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
Zone 8a around Seneca 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.
The actual range around Seneca's last frost
03/21 is the middle of 30 years of NOAA records, not a promise. Plant by 03/01 and you're betting against frost in roughly 9 years out of 10. 04/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Seneca compares
About 236 days separate Seneca's last and first frost, putting it 9,421 of 40,283 ZIP codes nationally. Within SC, it ranks 259 of 519.
Learn more
the frost range explains how to read the range around Seneca's dates instead of trusting one, and local microclimates explains what one yard in Seneca can differ from the 29679 normal.