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

Planting zone for 07399 — Jersey City, NJ

ZIP code 07399 (Jersey City, Hudson County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is April 4 and the first fall frost November 6.

Where ZIP 07399 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.

Zone7b5 to 10 °F
Coldest night−15 to −12.2 °C
Last frostApr 4
First frostNov 6
2012 zone7a

Was 7a 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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Jersey City, 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 Jersey City, NJ

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 4median — 50% chance of a later frost
Safe for tender plantsApril 16only 10% chance of frost after
First fall frostNovember 6median — 10% chance by Oct 25
Growing season216 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 26 and returns around November 19.

From the NOAA station Harrison, NJ — 4 miles away, elevation 23 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 07399

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 21 – Mar 7
SpinachSow outdoors · Feb 21 – Mar 14
Broccoli, cabbageStart indoors · Jan 24 – Feb 7
Broccoli, cabbageTransplant · Mar 14 – Mar 28
Onion setsPlant outdoors · Mar 7 – Mar 21
PotatoesPlant outdoors · Mar 14 – Mar 28
LettuceSow outdoors · Mar 7 – Mar 21
Carrots, beetsSow outdoors · Mar 14 – Mar 28
TomatoesStart indoors · Feb 7 – Feb 21
TomatoesTransplant · Apr 11 – Apr 25
Peppers, eggplantStart indoors · Jan 24 – Feb 7
Peppers, eggplantTransplant · Apr 18 – May 2
BeansSow outdoors · Apr 11 – Apr 25
Sweet cornSow outdoors · Apr 11 – Apr 25
Cucumbers, squashSow outdoors · Apr 11 – Apr 25
Fall lettuce, spinachSow outdoors · Sep 11 – Sep 25
GarlicPlant cloves · Oct 23 – Nov 27
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 4) and first fall frost (Nov 6) 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 07399 came on Mar 22 — about the same time as the 1991–2020 average (Mar 20).

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 Jersey City, NJ.

Soil in Jersey City, NJ

The soil mapped at the center of ZIP 07399 is Greenbelt — loam, well drained. Much of the area is built over (urban land); this is the natural soil underneath.

TextureLoama good balance for most vegetables
pH6.2slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.67%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Urban land, eolian substratum, 0 to 8 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 07399; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Jersey City, NJ

Summer high87 °Faverage high, July
Winter low25 °Faverage low, January
Hot days31days a year at 90 °F or more
Freezing nights83nights a year at 32 °F or less
Growing degree days3,759base 50 °F — the season’s usable heat
Longest day15 h 06 mindaylight on June 21
Shortest day9 h 15 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation50.4 inper year, rain and melted snow
Snowfall28 inper year; 24 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 39 °F, low 25 °F 39°25° JanFebruary: average high 42 °F, low 26 °F 42°26° FebMarch: average high 50 °F, low 33 °F 50°33° MarApril: average high 62 °F, low 43 °F 62°43° AprMay: average high 72 °F, low 54 °F 72°54° MayJune: average high 82 °F, low 63 °F 82°63° JunJuly: average high 87 °F, low 69 °F 87°69° JulAugust: average high 85 °F, low 67 °F 85°67° AugSeptember: average high 78 °F, low 60 °F 78°60° SepOctober: average high 66 °F, low 48 °F 66°48° OctNovember: average high 54 °F, low 38 °F 54°38° NovDecember: average high 44 °F, low 31 °F 44°31° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.66 in precipitation, 8 in snowfall 3.7❄8 JanFebruary: 3.26 in precipitation, 8.4 in snowfall 3.3❄8 FebMarch: 4.30 in precipitation, 4.7 in snowfall 4.3❄5 MarApril: 4.07 in precipitation, 0.7 in snowfall 4.1❄1 AprMay: 4.36 in precipitation 4.4 MayJune: 4.87 in precipitation 4.9 JunJuly: 4.81 in precipitation 4.8 JulAugust: 4.38 in precipitation 4.4 AugSeptember: 4.33 in precipitation 4.3 SepOctober: 4.15 in precipitation, 0.2 in snowfall 4.2 OctNovember: 3.65 in precipitation, 0.3 in snowfall 3.6 NovDecember: 4.58 in precipitation, 5.9 in snowfall 4.6❄6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Harrison, NJ (4 mi away); precipitation: Harrison, NJ (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7b.

070967b
Secaucus, NJ · <1 mi
070977b
Jersey City, NJ · <1 mi
070997b
Kearny, NJ · <1 mi
073037b
Jersey City, NJ · <1 mi
073087b
Jersey City, NJ · <1 mi
073957b
Jersey City, NJ · <1 mi
073067b
Jersey City, NJ · <1 mi
073047b
Jersey City, NJ · 1 mi

All 12 ZIP codes in Jersey City → · New Jersey planting zones →

Questions about 07399

What planting zone is ZIP code 07399?

ZIP code 07399 (Jersey City, 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 Jersey City, NJ?

The median last spring frost (32 °F) near 07399 is April 4; after April 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Harrison station.

When is the first frost in Jersey City, NJ?

The median first fall frost near 07399 is November 6, giving a median frost-free growing season of 216 days.

When should I plant tomatoes in 07399?

Start tomato seeds indoors around Feb 7 – Feb 21 and set transplants outside around Apr 11 – Apr 25, one to three weeks after the median last frost.

How much rain and snow does 07399 get?

About 50.4 inches of precipitation a year and 28 inches of snowfall (NOAA 1991–2020 normals, Harrison station).

How hot do summers get in Jersey City, NJ?

The average high peaks at 87 °F in July, with about 31 days a year at 90 °F or more.

What kind of soil does 07399 have?

The USDA soil survey maps Greenbelt at the center of ZIP 07399: loam, well drained, pH about 6.2 (slightly acidic).

Did spring come early in Jersey City, NJ in 2026?

Spring leaf-out near 07399 came on Mar 22 in 2026, about the same as the 1991–2020 average (Mar 20), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Jersey City, NJ?

Long-day onions: the longest day near 07399 is 15 h 06 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 07399 change?

Yes. The 2012 USDA map put 07399 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.