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

Planting zone for 08403 — Longport, NJ

ZIP code 08403 (Longport, Atlantic County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 26 and the first fall frost November 22.

Where ZIP 08403 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.

Zone7b5 to 10 °F
Coldest night−15 to −12.2 °C
Last frostMar 26
First frostNov 22
2012 zone7b

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Longport, NJ…

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 Longport, NJ

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 26median — 50% chance of a later frost
Safe for tender plantsApril 7only 10% chance of frost after
First fall frostNovember 22median — 10% chance by Nov 7
Growing season243 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 13 and returns around December 5.

From the NOAA station Margate, NJ — 2 miles away, elevation 16 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 08403

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 12 – Feb 26
SpinachSow outdoors · Feb 12 – Mar 5
Broccoli, cabbageStart indoors · Jan 15 – Jan 29
Broccoli, cabbageTransplant · Mar 5 – Mar 19
Onion setsPlant outdoors · Feb 26 – Mar 12
PotatoesPlant outdoors · Mar 5 – Mar 19
LettuceSow outdoors · Feb 26 – Mar 12
Carrots, beetsSow outdoors · Mar 5 – Mar 19
TomatoesStart indoors · Jan 29 – Feb 12
TomatoesTransplant · Apr 2 – Apr 16
Peppers, eggplantStart indoors · Jan 15 – Jan 29
Peppers, eggplantTransplant · Apr 9 – Apr 23
BeansSow outdoors · Apr 2 – Apr 16
Sweet cornSow outdoors · Apr 2 – Apr 16
Cucumbers, squashSow outdoors · Apr 2 – Apr 16
Fall lettuce, spinachSow outdoors · Sep 27 – Oct 11
GarlicPlant cloves · Nov 8 – Dec 13
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 26) and first fall frost (Nov 22) 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 08403 came on Mar 22 — 4 days later than the 1991–2020 average (Mar 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 7b in New Jersey

605 plants native to the lower 48 states, recorded in New Jersey, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. Each links to its USDA PLANTS profile.

Trees 81

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 119

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAllegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °F

Wildflowers & perennials 204

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °FAmerican 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 °F

Grasses 176

American beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °FAmerican cupscale3 ft · blooms early summer · high shade tolerance · to −18 °Farctic brome3 ft · blooms early summer · low shade tolerance · to −33 °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 °F

Vines 10

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fcatbird grape30 ft · blooms late spring · medium shade tolerance · to −13 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °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 Longport, NJ.

Soil in Longport, NJ

The soil mapped at the center of ZIP 08403 is Transquaking — peat, very poorly drained.

TexturePeattop layer
DrainageVery poorly drainedconsider raised beds
Organic matter55%high
Hydrologic groupA/Ddrains fast once dried out; wet otherwise
Farmland classFarmland of unique importanceUSDA classification

Map unit: Transquaking peat, 0 to 1 percent slopes, very frequently flooded.

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 08403; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Longport, NJ

Summer high85 °Faverage high, July
Winter low30 °Faverage low, January
Hot days19days a year at 90 °F or more
Freezing nights42nights a year at 32 °F or less
Growing degree days3,892base 50 °F — the season’s usable heat
Longest day14 h 56 mindaylight on June 21
Shortest day9 h 24 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation47.8 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 43 °F, low 30 °F 43°30° JanFebruary: average high 45 °F, low 31 °F 45°31° FebMarch: average high 51 °F, low 37 °F 51°37° MarApril: average high 61 °F, low 45 °F 61°45° AprMay: average high 70 °F, low 55 °F 70°55° MayJune: average high 80 °F, low 65 °F 80°65° JunJuly: average high 85 °F, low 71 °F 85°71° JulAugust: average high 84 °F, low 70 °F 84°70° AugSeptember: average high 78 °F, low 64 °F 78°64° SepOctober: average high 67 °F, low 52 °F 67°52° OctNovember: average high 57 °F, low 42 °F 57°42° NovDecember: average high 48 °F, low 35 °F 48°35° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 3.54 in precipitation 3.5 JanFebruary: 3.14 in precipitation 3.1 FebMarch: 4.51 in precipitation 4.5 MarApril: 3.65 in precipitation 3.6 AprMay: 3.55 in precipitation 3.5 MayJune: 3.98 in precipitation 4.0 JunJuly: 4.45 in precipitation 4.5 JulAugust: 4.92 in precipitation 4.9 AugSeptember: 3.74 in precipitation 3.7 SepOctober: 4.31 in precipitation 4.3 OctNovember: 3.53 in precipitation 3.5 NovDecember: 4.51 in precipitation 4.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Margate, NJ (2 mi away); precipitation: Egg Harbor Twp 1.3 Nw, NJ (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

1 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

082217b
Linwood, NJ · 2 mi
084027b
Margate City, NJ · 2 mi
082257b
Northfield, NJ · 3 mi
082447b
Somers Point, NJ · 3 mi
084067b
Ventnor City, NJ · 4 mi
082327b
Pleasantville, NJ · 5 mi
082267b
Ocean City, NJ · 5 mi
084018a
Atlantic City, NJ · 6 mi

New Jersey planting zones →

Questions about 08403

What planting zone is ZIP code 08403?

ZIP code 08403 (Longport, NJ) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Longport, NJ?

The median last spring frost (32 °F) near 08403 is March 26; after April 7 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Margate station.

When is the first frost in Longport, NJ?

The median first fall frost near 08403 is November 22, giving a median frost-free growing season of 243 days.

When should I plant tomatoes in 08403?

Start tomato seeds indoors around Jan 29 – Feb 12 and set transplants outside around Apr 2 – Apr 16, one to three weeks after the median last frost.

How much rain and snow does 08403 get?

About 47.8 inches of precipitation a year (NOAA 1991–2020 normals, Egg Harbor Twp 1.3 Nw station).

How hot do summers get in Longport, NJ?

The average high peaks at 85 °F in July, with about 19 days a year at 90 °F or more.

What kind of soil does 08403 have?

The USDA soil survey maps Transquaking at the center of ZIP 08403: peat, very poorly drained.

Did spring come early in Longport, NJ in 2026?

Spring leaf-out near 08403 came on Mar 22 in 2026, 4 days later than the 1991–2020 average (Mar 18), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Longport, NJ?

Intermediate onions: the longest day near 08403 is 14 h 56 min, so day-neutral types bulb best; long-day varieties may not bulb fully.