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

Planting zone for 07028 — Glen Ridge, NJ

ZIP code 07028 (Glen Ridge, Essex County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 18 and the first fall frost October 24.

Where ZIP 07028 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.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostApr 18
First frostOct 24
2012 zone7a

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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Glen Ridge, 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 Glen Ridge, NJ

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 18median — 50% chance of a later frost
Safe for tender plantsMay 7only 10% chance of frost after
First fall frostOctober 24median — 10% chance by Oct 8
Growing season187 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 3 and returns around November 4.

From the NOAA station Essex Fells Service Bldg, NJ — 4 miles away, elevation 351 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 07028

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 7 – Mar 21
SpinachSow outdoors · Mar 7 – Mar 28
Broccoli, cabbageStart indoors · Feb 7 – Feb 21
Broccoli, cabbageTransplant · Mar 28 – Apr 11
Onion setsPlant outdoors · Mar 21 – Apr 4
PotatoesPlant outdoors · Mar 28 – Apr 11
LettuceSow outdoors · Mar 21 – Apr 4
Carrots, beetsSow outdoors · Mar 28 – Apr 11
TomatoesStart indoors · Feb 21 – Mar 7
TomatoesTransplant · Apr 25 – May 9
Peppers, eggplantStart indoors · Feb 7 – Feb 21
Peppers, eggplantTransplant · May 2 – May 16
BeansSow outdoors · Apr 25 – May 9
Sweet cornSow outdoors · Apr 25 – May 9
Cucumbers, squashSow outdoors · Apr 25 – May 9
Fall lettuce, spinachSow outdoors · Aug 29 – Sep 12
GarlicPlant cloves · Oct 10 – Nov 14
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 18) and first fall frost (Oct 24) 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 07028 came on Mar 26 — about the same time as the 1991–2020 average (Mar 26).

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 Glen Ridge, NJ

The soil mapped at the center of ZIP 07028 is Boonton — slightly decomposed plant material, well drained.

TextureSlightly decomposed plant materialtop layer
pH3.9strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter77%high
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Boonton - Urban land, Boonton substratum complex, red sandstone lowland, 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 07028; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Glen Ridge, NJ

Summer high86 °Faverage high, July
Winter low21 °Faverage low, January
Hot days20days a year at 90 °F or more
Freezing nights118nights a year at 32 °F or less
Growing degree days3,247base 50 °F — the season’s usable heat
Longest day15 h 06 mindaylight on June 21
Shortest day9 h 14 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation52.4 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 38 °F, low 21 °F 38°21° JanFebruary: average high 41 °F, low 23 °F 41°23° FebMarch: average high 49 °F, low 30 °F 49°30° MarApril: average high 63 °F, low 40 °F 63°40° AprMay: average high 72 °F, low 49 °F 72°49° MayJune: average high 81 °F, low 59 °F 81°59° JunJuly: average high 86 °F, low 64 °F 86°64° JulAugust: average high 84 °F, low 63 °F 84°63° AugSeptember: average high 78 °F, low 54 °F 78°54° SepOctober: average high 65 °F, low 43 °F 65°43° OctNovember: average high 53 °F, low 34 °F 53°34° NovDecember: average high 43 °F, low 27 °F 43°27° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 3.50 in precipitation 3.5 JanFebruary: 3.23 in precipitation 3.2 FebMarch: 4.17 in precipitation 4.2 MarApril: 4.71 in precipitation 4.7 AprMay: 3.91 in precipitation 3.9 MayJune: 4.41 in precipitation 4.4 JunJuly: 5.15 in precipitation 5.2 JulAugust: 5.51 in precipitation 5.5 AugSeptember: 4.30 in precipitation 4.3 SepOctober: 5.05 in precipitation 5.0 OctNovember: 3.83 in precipitation 3.8 NovDecember: 4.62 in precipitation 4.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Essex Fells Service Bldg, NJ (4 mi away); precipitation: Cedar Grove Twp 0.4 W, NJ (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

070037a
Bloomfield, NJ · <1 mi
070427a
Montclair, NJ · <1 mi
070177a
East Orange, NJ · 2 mi
070517a
Orange, NJ · 2 mi
071847b
Newark, NJ · 2 mi
071897b
Newark, NJ · 2 mi
071917b
Newark, NJ · 2 mi
071987b
Newark, NJ · 2 mi

New Jersey planting zones →

Questions about 07028

What planting zone is ZIP code 07028?

ZIP code 07028 (Glen Ridge, NJ) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Glen Ridge, NJ?

The median last spring frost (32 °F) near 07028 is April 18; after May 7 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Essex Fells Service Bldg station.

When is the first frost in Glen Ridge, NJ?

The median first fall frost near 07028 is October 24, giving a median frost-free growing season of 187 days.

When should I plant tomatoes in 07028?

Start tomato seeds indoors around Feb 21 – Mar 7 and set transplants outside around Apr 25 – May 9, one to three weeks after the median last frost.

How much rain and snow does 07028 get?

About 52.4 inches of precipitation a year (NOAA 1991–2020 normals, Cedar Grove Twp 0.4 W station).

How hot do summers get in Glen Ridge, NJ?

The average high peaks at 86 °F in July, with about 20 days a year at 90 °F or more.

What kind of soil does 07028 have?

The USDA soil survey maps Boonton at the center of ZIP 07028: slightly decomposed plant material, well drained, pH about 3.9 (strongly acidic).

Did spring come early in Glen Ridge, NJ in 2026?

Spring leaf-out near 07028 came on Mar 26 in 2026, about the same as the 1991–2020 average (Mar 26), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Glen Ridge, NJ?

Long-day onions: the longest day near 07028 is 15 h 06 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).