Calhoun Falls, SC 29840 Frost Dates
Frost dates for Calhoun Falls, SC, ZIP 29840
The last spring frost here typically falls around 03/28, about 212 days from today. The first fall frost typically arrives around 11/07, about 226 frost-free days later.
The USDA Plant Hardiness Zone Map puts Calhoun Falls in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 8b around Calhoun Falls 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.
How much risk comes with planting early here
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. 04/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Calhoun Falls compares
At roughly 226 frost-free days, Calhoun Falls places 11,216 of 40,283 ZIP codes in this dataset. Within SC, it ranks 365 of 519.
Learn more
zone vs. frost date explains why Zone 8b and Calhoun Falls's frost date answer different questions, and the frost range explains how to read the range around Calhoun Falls's dates instead of trusting one.