Myrtle Beach, SC 29579 Frost Dates
Myrtle Beach, SC: when does the frost end?
Around 03/13 is the usual last spring frost, about 197 days away. Fall's first freeze usually shows up around 11/20, roughly 255 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Myrtle Beach in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 12 weeks until Myrtle Beach's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Myrtle Beach's last frost
03/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/31 and only about 1 year in 10 sees frost after that.
Myrtle Beach against the rest of the dataset
Myrtle Beach's growing season runs about 255 days, ranking 6,890 of 40,283 US ZIP codes measured here, longest to shortest. Within SC, it ranks 68 of 519.
Learn more
Before leaning on 29579's figures: local microclimates explains what one yard in Myrtle Beach can differ from the 29579 normal, while zone vs. frost date explains why Zone 8b and Myrtle Beach's frost date answer different questions.