Spartanburg, SC 29306 Frost Dates
Spartanburg, SC: when does the frost end?
Around 03/28 is the usual last spring frost, about 212 days away. Fall's first freeze usually shows up around 11/07, roughly 224 days after the last spring frost.
Spartanburg 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.
Stretching the season past the first frost
With roughly 10 weeks until Spartanburg's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/28 isn't a guarantee
03/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/14 and only about 1 year in 10 sees frost after that.
Spartanburg against the rest of the dataset
Spartanburg's growing season runs about 224 days, ranking 11,736 of 40,283 US ZIP codes measured here, longest to shortest. Within SC, it ranks 386 of 519.
Learn more
Before leaning on 29306's figures: local microclimates explains what one yard in Spartanburg can differ from the 29306 normal, while zone vs. frost date explains why Zone 8a and Spartanburg's frost date answer different questions.