Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 29348 — Gramling, SC

ZIP code 29348 (Gramling, Spartanburg County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is April 13 and the first fall frost October 26.

Where ZIP 29348 is

tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone8a10 to 15 °F
Coldest night−12.2 to −9.4 °C
Last frostApr 13
First frostOct 26
2012 zone7b

Was 7b on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Gramling, SC…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Gramling, SC

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 13median — 50% chance of a later frost
Safe for tender plantsApril 27only 10% chance of frost after
First fall frostOctober 26median — 10% chance by Oct 15
Growing season195 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 1 and returns around November 4.

From the NOAA station Chesnee 7 Wsw, SC — 9 miles away, elevation 748 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 29348

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 2 – Mar 16
SpinachSow outdoors · Mar 2 – Mar 23
Broccoli, cabbageStart indoors · Feb 2 – Feb 16
Broccoli, cabbageTransplant · Mar 23 – Apr 6
Onion setsPlant outdoors · Mar 16 – Mar 30
PotatoesPlant outdoors · Mar 23 – Apr 6
LettuceSow outdoors · Mar 16 – Mar 30
Carrots, beetsSow outdoors · Mar 23 – Apr 6
TomatoesStart indoors · Feb 16 – Mar 2
TomatoesTransplant · Apr 20 – May 4
Peppers, eggplantStart indoors · Feb 2 – Feb 16
Peppers, eggplantTransplant · Apr 27 – May 11
BeansSow outdoors · Apr 20 – May 4
Sweet cornSow outdoors · Apr 20 – May 4
Cucumbers, squashSow outdoors · Apr 20 – May 4
Fall lettuce, spinachSow outdoors · Aug 31 – Sep 14
GarlicPlant cloves · Oct 12 – Nov 16
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 13) and first fall frost (Oct 26) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 29348 came on Feb 21 — 5 days later than the 1991–2020 average (Feb 16).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Soil in Gramling, SC

The soil mapped at the center of ZIP 29348 is Cecil — sandy loam, well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding
pH5.3strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter0.5%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classprime farmlandUSDA classification

Map unit: Cecil sandy loam, 2 to 6 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 29348; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Gramling, SC

Summer high89 °Faverage high, July
Winter low27 °Faverage low, January
Hot days55days a year at 90 °F or more
Freezing nights93nights a year at 32 °F or less
Growing degree days4,343base 50 °F — the season’s usable heat
Longest day14 h 31 mindaylight on June 21
Shortest day9 h 47 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation52.1 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 51 °F, low 27 °F 51°27° JanFebruary: average high 55 °F, low 30 °F 55°30° FebMarch: average high 62 °F, low 36 °F 62°36° MarApril: average high 72 °F, low 44 °F 72°44° AprMay: average high 79 °F, low 54 °F 79°54° MayJune: average high 86 °F, low 63 °F 86°63° JunJuly: average high 89 °F, low 67 °F 89°67° JulAugust: average high 87 °F, low 66 °F 87°66° AugSeptember: average high 82 °F, low 59 °F 82°59° SepOctober: average high 72 °F, low 46 °F 72°46° OctNovember: average high 62 °F, low 35 °F 62°35° NovDecember: average high 54 °F, low 30 °F 54°30° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 4.40 in precipitation 4.4 JanFebruary: 3.89 in precipitation 3.9 FebMarch: 4.79 in precipitation 4.8 MarApril: 4.67 in precipitation 4.7 AprMay: 4.18 in precipitation 4.2 MayJune: 4.52 in precipitation 4.5 JunJuly: 4.92 in precipitation 4.9 JulAugust: 4.10 in precipitation 4.1 AugSeptember: 3.83 in precipitation 3.8 SepOctober: 3.96 in precipitation 4.0 OctNovember: 4.04 in precipitation 4.0 NovDecember: 4.79 in precipitation 4.8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Chesnee 7 Wsw, SC (9 mi away); precipitation: Lyman 5.3 Wnw, SC (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8a.

293228a
Campobello, SC · 3 mi
293498a
Inman, SC · 4 mi
293658a
Lyman, SC · 7 mi
293858a
Wellford, SC · 7 mi
293388a
Fingerville, SC · 8 mi
293568a
Landrum, SC · 9 mi
296518a
Greer, SC · 9 mi
293168a
Boiling Springs, SC · 9 mi

South Carolina planting zones →

Questions about 29348

What planting zone is ZIP code 29348?

ZIP code 29348 (Gramling, SC) is in USDA hardiness zone 8a on the 2023 map: the coldest night of an average winter reaches 10 to 15 °F (−12.2 to −9.4 °C).

When is the last frost in Gramling, SC?

The median last spring frost (32 °F) near 29348 is April 13; after April 27 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Chesnee 7 Wsw station.

When is the first frost in Gramling, SC?

The median first fall frost near 29348 is October 26, giving a median frost-free growing season of 195 days.

When should I plant tomatoes in 29348?

Start tomato seeds indoors around Feb 16 – Mar 2 and set transplants outside around Apr 20 – May 4, one to three weeks after the median last frost.

How much rain and snow does 29348 get?

About 52.1 inches of precipitation a year (NOAA 1991–2020 normals, Lyman 5.3 Wnw station).

How hot do summers get in Gramling, SC?

The average high peaks at 89 °F in July, with about 55 days a year at 90 °F or more.

What kind of soil does 29348 have?

The USDA soil survey maps Cecil at the center of ZIP 29348: sandy loam, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Gramling, SC in 2026?

Spring leaf-out near 29348 came on Feb 21 in 2026, 5 days later than the 1991–2020 average (Feb 16), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Gramling, SC?

Intermediate onions: the longest day near 29348 is 14 h 31 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 29348 change?

Yes. The 2012 USDA map put 29348 in zone 7b; the 2023 map puts it in zone 8a. The newer map uses 1991–2020 data and more weather stations.