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

Planting zone for 29583 — Pamplico, SC

ZIP code 29583 (Pamplico, Florence County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 20 and the first fall frost November 13.

Where ZIP 29583 is

Outlined: the ZIP code area · 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.

Zone8b15 to 20 °F
Coldest night−9.4 to −6.7 °C
Last frostMar 20
First frostNov 13
2012 zone8a

Was 8a 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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Pamplico, 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 Pamplico, SC

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 20median — 50% chance of a later frost
Safe for tender plantsApril 5only 10% chance of frost after
First fall frostNovember 13median — 10% chance by Oct 30
Growing season240 daysfrost-free, median

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

From the NOAA station Lake City 2 Se, SC — 12 miles away, elevation 75 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 29583

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 6 – Feb 20
SpinachSow outdoors · Feb 6 – Feb 27
Broccoli, cabbageStart indoors · Jan 9 – Jan 23
Broccoli, cabbageTransplant · Feb 27 – Mar 13
Onion setsPlant outdoors · Feb 20 – Mar 6
PotatoesPlant outdoors · Feb 27 – Mar 13
LettuceSow outdoors · Feb 20 – Mar 6
Carrots, beetsSow outdoors · Feb 27 – Mar 13
TomatoesStart indoors · Jan 23 – Feb 6
TomatoesTransplant · Mar 27 – Apr 10
Peppers, eggplantStart indoors · Jan 9 – Jan 23
Peppers, eggplantTransplant · Apr 3 – Apr 17
BeansSow outdoors · Mar 27 – Apr 10
Sweet cornSow outdoors · Mar 27 – Apr 10
Cucumbers, squashSow outdoors · Mar 27 – Apr 10
Fall lettuce, spinachSow outdoors · Sep 18 – Oct 2
GarlicPlant cloves · Oct 30 – Dec 4
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 20) and first fall frost (Nov 13) 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 29583 came on Feb 19 — 13 days later than the 1991–2020 average (Feb 6).

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 Pamplico, SC

The soil mapped at the center of ZIP 29583 is Wagram — sand, well drained.

TextureSanddrains and warms fast; dries out and needs more feeding
pH5.3strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Wagram sand, 0 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 29583; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Pamplico, SC

Summer high92 °Faverage high, July
Winter low34 °Faverage low, January
Hot days72days a year at 90 °F or more
Freezing nights53nights a year at 32 °F or less
Growing degree days5,752base 50 °F — the season’s usable heat
Longest day14 h 25 mindaylight on June 21
Shortest day9 h 53 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation49.8 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 58 °F, low 34 °F 58°34° JanFebruary: average high 61 °F, low 37 °F 61°37° FebMarch: average high 68 °F, low 43 °F 68°43° MarApril: average high 77 °F, low 50 °F 77°50° AprMay: average high 83 °F, low 59 °F 83°59° MayJune: average high 89 °F, low 67 °F 89°67° JunJuly: average high 92 °F, low 71 °F 92°71° JulAugust: average high 91 °F, low 70 °F 91°70° AugSeptember: average high 86 °F, low 65 °F 86°65° SepOctober: average high 77 °F, low 53 °F 77°53° OctNovember: average high 68 °F, low 42 °F 68°42° NovDecember: average high 61 °F, low 37 °F 61°37° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 3.65 in precipitation 3.6 JanFebruary: 3.48 in precipitation 3.5 FebMarch: 3.60 in precipitation 3.6 MarApril: 3.19 in precipitation 3.2 AprMay: 4.20 in precipitation 4.2 MayJune: 4.84 in precipitation 4.8 JunJuly: 5.77 in precipitation 5.8 JulAugust: 5.81 in precipitation 5.8 AugSeptember: 4.74 in precipitation 4.7 SepOctober: 3.52 in precipitation 3.5 OctNovember: 3.13 in precipitation 3.1 NovDecember: 3.85 in precipitation 3.9 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Lake City 2 Se, SC (12 mi away); precipitation: Lake City 2 Se, SC (12 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

295038b
Florence, SC · 7 mi
295048b
Florence, SC · 8 mi
295308b
Coward, SC · 10 mi
295918b
Scranton, SC · 11 mi
295418b
Effingham, SC · 11 mi
295558b
Johnsonville, SC · 11 mi
295198b
Centenary, SC · 12 mi
295058b
Florence, SC · 13 mi

South Carolina planting zones →

Questions about 29583

What planting zone is ZIP code 29583?

ZIP code 29583 (Pamplico, SC) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Pamplico, SC?

The median last spring frost (32 °F) near 29583 is March 20; after April 5 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Lake City 2 Se station.

When is the first frost in Pamplico, SC?

The median first fall frost near 29583 is November 13, giving a median frost-free growing season of 240 days.

When should I plant tomatoes in 29583?

Start tomato seeds indoors around Jan 23 – Feb 6 and set transplants outside around Mar 27 – Apr 10, one to three weeks after the median last frost.

How much rain and snow does 29583 get?

About 49.8 inches of precipitation a year (NOAA 1991–2020 normals, Lake City 2 Se station).

How hot do summers get in Pamplico, SC?

The average high peaks at 92 °F in July, with about 72 days a year at 90 °F or more.

What kind of soil does 29583 have?

The USDA soil survey maps Wagram at the center of ZIP 29583: sand, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Pamplico, SC in 2026?

Spring leaf-out near 29583 came on Feb 19 in 2026, 13 days later than the 1991–2020 average (Feb 6), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Pamplico, SC?

Intermediate onions: the longest day near 29583 is 14 h 25 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 29583 change?

Yes. The 2012 USDA map put 29583 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.