Frost Dates for 29624 — Anderson, South Carolina

Half of springs at Anderson, SC see their last 32°F night by March 23; only one in ten is past it by March 3, and one in ten still has one after April 6. Planting tender crops after March 31 leaves a 30% risk of a frost on them, after April 3 20%, and after April 6 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 84% of the 105 South Carolina stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 11 in half of years, as early as October 31 one year in ten, and holds off past December 1 one year in ten. A hard freeze of 28°F follows 15 days later, around November 26; in spring the one-in-ten date for 28°F is March 30, 7 days before the 32°F one. The freeze-free season lasts 234 days in a typical year, longer than at 58% of the 105 South Carolina stations; it reaches 259 days one year in ten and falls short of 214 one year in ten. On average 57 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 12 days longer, to about April 4, and return around November 1. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 62%.

July is the warmest month at Anderson, SC, averaging 91°F by day and 71°F at night; January is the coldest at 53°F and 33°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 89% of years and April still brings one in 26% of years.

Warmth for growing adds up to 5,164 growing degree days a year (base 50°F), fewer than at 66% of the 105 South Carolina stations. 39% of them (2,015) have built up by the end of June, and July adds the most, 952. Precipitation totals 50.4 inches a year, most in December (5.0") and least in October (3.3"); May to September bring 40% of it.

The nearest other station, Anderson Co Airport, SC, 4 miles west of Anderson, has a last frost 6 days later (March 29), a first frost 3 days earlier (November 8), a season 7 days shorter.

Measurable snow is rare here: only 3 of 24 winters from 1991 to 2020 recorded 0.1 inch or more at Antreville, SC, 14.3 miles away, so there is no typical first-snow date to plan around.

ZIP 29624 is 4 miles from Anderson, SC, which stands at 800 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 29621 (Anderson). The 2023 USDA Plant Hardiness Zone Map lists ZIP 29624 in zone 8a, the band where the coldest night of the year averaged 10 to 15°F (-12.2 to -9.4°C) over 1991–2020; a zone describes winter lows, not frost dates.