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

Planting zone for 07418 — Glenwood, NJ

ZIP code 07418 (Glenwood, Sussex County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is May 1 and the first fall frost October 12.

Where ZIP 07418 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.

Zone6b−5 to 0 °F
Coldest night−20.6 to −17.8 °C
Last frostMay 1
First frostOct 12
2012 zone6a

Was 6a 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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Glenwood, 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 Glenwood, NJ

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 1median — 50% chance of a later frost
Safe for tender plantsMay 18only 10% chance of frost after
First fall frostOctober 12median — 10% chance by Sep 30
Growing season164 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 19 and returns around October 25.

From the NOAA station Sussex Airport, NJ — 7 miles away, elevation 420 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 07418

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 20 – Apr 3
SpinachSow outdoors · Mar 20 – Apr 10
Broccoli, cabbageStart indoors · Feb 20 – Mar 6
Broccoli, cabbageTransplant · Apr 10 – Apr 24
Onion setsPlant outdoors · Apr 3 – Apr 17
PotatoesPlant outdoors · Apr 10 – Apr 24
LettuceSow outdoors · Apr 3 – Apr 17
Carrots, beetsSow outdoors · Apr 10 – Apr 24
TomatoesStart indoors · Mar 6 – Mar 20
TomatoesTransplant · May 8 – May 22
Peppers, eggplantStart indoors · Feb 20 – Mar 6
Peppers, eggplantTransplant · May 15 – May 29
BeansSow outdoors · May 8 – May 22
Sweet cornSow outdoors · May 8 – May 22
Cucumbers, squashSow outdoors · May 8 – May 22
Fall lettuce, spinachSow outdoors · Aug 17 – Aug 31
GarlicPlant cloves · Sep 28 – Nov 2
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 1) and first fall frost (Oct 12) 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 07418 came on Apr 1 — 8 days earlier than the 1991–2020 average (Apr 9).

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 Glenwood, NJ

The soil mapped at the center of ZIP 07418 is Rockaway — slightly decomposed plant material, well drained.

TextureSlightly decomposed plant materialtop layer
DrainageWell drainednatural drainage class
Organic matter85%high
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Rockaway-Chatfield-Rock outcrop complex, 15 to 35 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 07418; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Glenwood, NJ

Summer high84 °Faverage high, July
Winter low18 °Faverage low, January
Hot days12days a year at 90 °F or more
Freezing nights135nights a year at 32 °F or less
Growing degree days2,806base 50 °F — the season’s usable heat
Longest day15 h 09 mindaylight on June 21
Shortest day9 h 12 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation48.1 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 36 °F, low 18 °F 36°18° JanFebruary: average high 39 °F, low 20 °F 39°20° FebMarch: average high 48 °F, low 27 °F 48°27° MarApril: average high 61 °F, low 37 °F 61°37° AprMay: average high 71 °F, low 47 °F 71°47° MayJune: average high 80 °F, low 56 °F 80°56° JunJuly: average high 84 °F, low 61 °F 84°61° JulAugust: average high 82 °F, low 60 °F 82°60° AugSeptember: average high 75 °F, low 51 °F 75°51° SepOctober: average high 64 °F, low 40 °F 64°40° OctNovember: average high 51 °F, low 31 °F 51°31° NovDecember: average high 41 °F, low 24 °F 41°24° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 3.38 in precipitation 3.4 JanFebruary: 2.81 in precipitation 2.8 FebMarch: 3.86 in precipitation 3.9 MarApril: 3.85 in precipitation 3.9 AprMay: 3.77 in precipitation 3.8 MayJune: 4.34 in precipitation 4.3 JunJuly: 4.24 in precipitation 4.2 JulAugust: 4.86 in precipitation 4.9 AugSeptember: 4.35 in precipitation 4.3 SepOctober: 4.70 in precipitation 4.7 OctNovember: 3.62 in precipitation 3.6 NovDecember: 4.28 in precipitation 4.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Sussex Airport, NJ (7 mi away); precipitation: Warwick 3.2 Wnw, NY (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

074626b
Vernon, NJ · 3 mi
109696b
Pine Island, NY · 4 mi
074286b
Mc Afee, NJ · 4 mi
109596b
New Milford, NY · 4 mi
074226b
Highland Lakes, NJ · 5 mi
109886b
Unionville, NY · 6 mi
109986b
Westtown, NY · 6 mi
074616b
Sussex, NJ · 6 mi

New Jersey planting zones →

Questions about 07418

What planting zone is ZIP code 07418?

ZIP code 07418 (Glenwood, NJ) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in Glenwood, NJ?

The median last spring frost (32 °F) near 07418 is May 1; after May 18 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Sussex Airport station.

When is the first frost in Glenwood, NJ?

The median first fall frost near 07418 is October 12, giving a median frost-free growing season of 164 days.

When should I plant tomatoes in 07418?

Start tomato seeds indoors around Mar 6 – Mar 20 and set transplants outside around May 8 – May 22, one to three weeks after the median last frost.

How much rain and snow does 07418 get?

About 48.1 inches of precipitation a year (NOAA 1991–2020 normals, Warwick 3.2 Wnw station).

How hot do summers get in Glenwood, NJ?

The average high peaks at 84 °F in July, with about 12 days a year at 90 °F or more.

What kind of soil does 07418 have?

The USDA soil survey maps Rockaway at the center of ZIP 07418: slightly decomposed plant material, well drained.

Did spring come early in Glenwood, NJ in 2026?

Spring leaf-out near 07418 came on Apr 1 in 2026, 8 days earlier than the 1991–2020 average (Apr 9), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Glenwood, NJ?

Long-day onions: the longest day near 07418 is 15 h 09 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 07418 change?

Yes. The 2012 USDA map put 07418 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.