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

Planting zone for 27540 — Holly Springs, NC

ZIP code 27540 (Holly Springs, Wake County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is April 6 and the first fall frost November 3.

Where ZIP 27540 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.

Zone8a10 to 15 °F
Coldest night−12.2 to −9.4 °C
Last frostApr 6
First frostNov 3
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 Holly Springs, NC…

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 Holly Springs, NC

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 6median — 50% chance of a later frost
Safe for tender plantsApril 21only 10% chance of frost after
First fall frostNovember 3median — 10% chance by Oct 23
Growing season209 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 28 and returns around November 13.

From the NOAA station New Hill, NC — 5 miles away, elevation 322 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 27540

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 23 – Mar 9
SpinachSow outdoors · Feb 23 – Mar 16
Broccoli, cabbageStart indoors · Jan 26 – Feb 9
Broccoli, cabbageTransplant · Mar 16 – Mar 30
Onion setsPlant outdoors · Mar 9 – Mar 23
PotatoesPlant outdoors · Mar 16 – Mar 30
LettuceSow outdoors · Mar 9 – Mar 23
Carrots, beetsSow outdoors · Mar 16 – Mar 30
TomatoesStart indoors · Feb 9 – Feb 23
TomatoesTransplant · Apr 13 – Apr 27
Peppers, eggplantStart indoors · Jan 26 – Feb 9
Peppers, eggplantTransplant · Apr 20 – May 4
BeansSow outdoors · Apr 13 – Apr 27
Sweet cornSow outdoors · Apr 13 – Apr 27
Cucumbers, squashSow outdoors · Apr 13 – Apr 27
Fall lettuce, spinachSow outdoors · Sep 8 – Sep 22
GarlicPlant cloves · Oct 20 – Nov 24
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 6) and first fall frost (Nov 3) 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 27540 came on Feb 21 — 3 days later than the 1991–2020 average (Feb 18).

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).

Native plants for zone 8a in North Carolina

619 plants native to the lower 48 states, recorded in North Carolina, and rated by the USDA to survive 10 °F or colder — the bottom of zone 8a. Each links to its USDA PLANTS profile.

Trees 92

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Farborvitae50 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 136

Allegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Faloe yucca15 ft · blooms early summer · medium shade tolerance · to −1 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican beautyberry6 ft · blooms early summer · medium shade tolerance · to −8 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °F

Wildflowers & perennials 191

American bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °FAmerican speedwell0.8 ft · blooms mid summer · low shade tolerance · to −38 °FAmerican spongeplant0.5 ft · blooms mid spring · high shade tolerance · to −24 °F

Grasses 173

American beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °FAmerican cupscale3 ft · blooms early summer · high shade tolerance · to −18 °FAtlantic mannagrass3 ft · blooms summer · low shade tolerance · to −8 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °FBailey's sedge2.1 ft · blooms late spring · low shade tolerance · to −33 °F

Vines 12

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °Fgraybark grape50 ft · blooms late spring · medium shade tolerance · to −8 °Fheartleaf peppervine2 ft · blooms late spring · low shade tolerance · to −8 °F

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Holly Springs, NC.

Soil in Holly Springs, NC

The soil mapped at the center of ZIP 27540 is Pacolet — sandy loam, well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Pacolet sandy loam, 15 to 25 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 27540; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Holly Springs, NC

Summer high89 °Faverage high, July
Winter low28 °Faverage low, January
Hot days43days a year at 90 °F or more
Freezing nights89nights a year at 32 °F or less
Growing degree days4,538base 50 °F — the season’s usable heat
Longest day14 h 34 mindaylight on June 21
Shortest day9 h 45 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation48.2 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 28 °F 51°28° 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 45 °F 72°45° AprMay: average high 79 °F, low 55 °F 79°55° MayJune: average high 86 °F, low 63 °F 86°63° JunJuly: average high 89 °F, low 68 °F 89°68° JulAugust: average high 88 °F, low 66 °F 88°66° AugSeptember: average high 82 °F, low 60 °F 82°60° SepOctober: average high 72 °F, low 48 °F 72°48° OctNovember: average high 62 °F, low 37 °F 62°37° NovDecember: average high 54 °F, low 31 °F 54°31° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 3.51 in precipitation 3.5 JanFebruary: 2.86 in precipitation 2.9 FebMarch: 3.73 in precipitation 3.7 MarApril: 3.61 in precipitation 3.6 AprMay: 3.68 in precipitation 3.7 MayJune: 4.47 in precipitation 4.5 JunJuly: 5.40 in precipitation 5.4 JulAugust: 5.03 in precipitation 5.0 AugSeptember: 5.23 in precipitation 5.2 SepOctober: 3.48 in precipitation 3.5 OctNovember: 3.52 in precipitation 3.5 NovDecember: 3.70 in precipitation 3.7 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: New Hill, NC (5 mi away); precipitation: Holly Springs 3.6 Sse, NC (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8a.

275398a
Apex, NC · 5 mi
275268a
Fuquay Varina, NC · 6 mi
275628a
New Hill, NC · 6 mi
275028a
Apex, NC · 7 mi
275188a
Cary, NC · 9 mi
275438a
Kipling, NC · 10 mi
275118a
Cary, NC · 11 mi
275928a
Willow Spring, NC · 12 mi

North Carolina planting zones →

Questions about 27540

What planting zone is ZIP code 27540?

ZIP code 27540 (Holly Springs, NC) 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 Holly Springs, NC?

The median last spring frost (32 °F) near 27540 is April 6; after April 21 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, New Hill station.

When is the first frost in Holly Springs, NC?

The median first fall frost near 27540 is November 3, giving a median frost-free growing season of 209 days.

When should I plant tomatoes in 27540?

Start tomato seeds indoors around Feb 9 – Feb 23 and set transplants outside around Apr 13 – Apr 27, one to three weeks after the median last frost.

How much rain and snow does 27540 get?

About 48.2 inches of precipitation a year (NOAA 1991–2020 normals, Holly Springs 3.6 Sse station).

How hot do summers get in Holly Springs, NC?

The average high peaks at 89 °F in July, with about 43 days a year at 90 °F or more.

What kind of soil does 27540 have?

The USDA soil survey maps Pacolet at the center of ZIP 27540: sandy loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Holly Springs, NC in 2026?

Spring leaf-out near 27540 came on Feb 21 in 2026, 3 days later than the 1991–2020 average (Feb 18), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Holly Springs, NC?

Intermediate onions: the longest day near 27540 is 14 h 34 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 27540 change?

Yes. The 2012 USDA map put 27540 in zone 7b; the 2023 map puts it in zone 8a. The newer map uses 1991–2020 data and more weather stations.