Hilton Head Island, SC 29925 Frost Dates
When can you plant in Hilton Head Island, SC?
The last spring frost here typically falls around 03/03, about 187 days from today. The first fall frost typically arrives around 12/09, about 282 frost-free days later.
Zone 9b (25 to 30°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 Hilton Head Island, not a forecast for this year.
What to do before the first frost
About 15 weeks of growing season left in Hilton Head Island before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Hilton Head Island's last frost
03/03 is the middle of 30 years of NOAA records, not a promise. Plant by 02/02 and you're betting against frost in roughly 9 years out of 10. 03/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hilton Head Island compares
Hilton Head Island's growing season runs about 282 days, ranking 4,766 of 40,283 US ZIP codes measured here, longest to shortest. Within SC, it ranks 13 of 519.
Learn more
zone vs. frost date covers why Zone 9b and Hilton Head Island's frost date answer different questions. the frost range covers how to read the range around Hilton Head Island's dates instead of trusting one.