Ruby, SC 29741 Frost Dates
29741, near Ruby, SC: the frost window
The last spring frost here typically falls around 03/27, about 211 days from today. Fall's first freeze usually shows up around 11/08, roughly 228 days after the last spring frost.
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 Ruby, not a forecast for this year.
Stretching the season past the first frost
Ruby's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/27 isn't a guarantee
03/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/09 and only about 1 year in 10 sees frost after that.
Ruby against the rest of the dataset
Ruby's growing season runs about 228 days, ranking 10,917 of 40,283 US ZIP codes measured here, longest to shortest. Within SC, it ranks 353 of 519.
Learn more
Two guides worth reading on 29741: zone vs. frost date, on why Zone 8a and Ruby's frost date answer different questions, and the frost range, on how to read the range around Ruby's dates instead of trusting one.