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

Planting zone for 07045 — Montville, NJ

ZIP code 07045 (Montville, Morris County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 17 and the first fall frost October 23.

Where ZIP 07045 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 17
First frostOct 23
2012 zone6b

Was 6b 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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Montville, 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 Montville, NJ

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 17median — 50% chance of a later frost
Safe for tender plantsMay 5only 10% chance of frost after
First fall frostOctober 23median — 10% chance by Oct 8
Growing season189 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 4 and returns around November 2.

From the NOAA station Boonton 1 Se, NJ — 2 miles away, elevation 279 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 07045

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 6 – Mar 20
SpinachSow outdoors · Mar 6 – Mar 27
Broccoli, cabbageStart indoors · Feb 6 – Feb 20
Broccoli, cabbageTransplant · Mar 27 – Apr 10
Onion setsPlant outdoors · Mar 20 – Apr 3
PotatoesPlant outdoors · Mar 27 – Apr 10
LettuceSow outdoors · Mar 20 – Apr 3
Carrots, beetsSow outdoors · Mar 27 – Apr 10
TomatoesStart indoors · Feb 20 – Mar 6
TomatoesTransplant · Apr 24 – May 8
Peppers, eggplantStart indoors · Feb 6 – Feb 20
Peppers, eggplantTransplant · May 1 – May 15
BeansSow outdoors · Apr 24 – May 8
Sweet cornSow outdoors · Apr 24 – May 8
Cucumbers, squashSow outdoors · Apr 24 – May 8
Fall lettuce, spinachSow outdoors · Aug 28 – Sep 11
GarlicPlant cloves · Oct 9 – Nov 13
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 17) and first fall frost (Oct 23) 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 07045 came on Mar 31 — about the same time as the 1991–2020 average (Apr 2).

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 Montville, NJ

The soil mapped at the center of ZIP 07045 is Parsippany — silt loam, poorly drained.

TextureSilt loama good balance for most vegetables
pH5.8moderately acidic; most vegetables like 6.0–7.0
DrainagePoorly drainedconsider raised beds
Organic matter4%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classFarmland of local importanceUSDA classification

Map unit: Parsippany silt loam, sandy loam substratum, 0 to 3 percent slopes, 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 07045; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Montville, NJ

Summer high85 °Faverage high, July
Winter low21 °Faverage low, January
Hot days16days a year at 90 °F or more
Freezing nights124nights a year at 32 °F or less
Growing degree days3,151base 50 °F — the season’s usable heat
Longest day15 h 07 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)
Precipitation49.2 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 40 °F, low 22 °F 40°22° FebMarch: average high 48 °F, low 29 °F 48°29° MarApril: average high 61 °F, low 39 °F 61°39° AprMay: average high 71 °F, low 49 °F 71°49° MayJune: average high 81 °F, low 59 °F 81°59° JunJuly: average high 85 °F, low 64 °F 85°64° JulAugust: average high 84 °F, low 62 °F 84°62° AugSeptember: average high 77 °F, low 54 °F 77°54° SepOctober: average high 64 °F, low 42 °F 64°42° OctNovember: average high 53 °F, low 33 °F 53°33° NovDecember: average high 42 °F, low 26 °F 42°26° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 3.73 in precipitation 3.7 JanFebruary: 2.79 in precipitation 2.8 FebMarch: 4.16 in precipitation 4.2 MarApril: 3.63 in precipitation 3.6 AprMay: 3.95 in precipitation 4.0 MayJune: 4.91 in precipitation 4.9 JunJuly: 4.70 in precipitation 4.7 JulAugust: 3.67 in precipitation 3.7 AugSeptember: 4.68 in precipitation 4.7 SepOctober: 4.54 in precipitation 4.5 OctNovember: 4.06 in precipitation 4.1 NovDecember: 4.36 in precipitation 4.4 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Boonton 1 Se, NJ (2 mi away); precipitation: Boonton 1 Se, NJ (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

070827a
Towaco, NJ · 2 mi
070347a
Lake Hiawatha, NJ · 2 mi
070587a
Pine Brook, NJ · 3 mi
070056b
Boonton, NJ · 3 mi
070357a
Lincoln Park, NJ · 3 mi
070047a
Fairfield, NJ · 4 mi
070547a
Parsippany, NJ · 4 mi
070466b
Mountain Lakes, NJ · 4 mi

New Jersey planting zones →

Questions about 07045

What planting zone is ZIP code 07045?

ZIP code 07045 (Montville, 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 Montville, NJ?

The median last spring frost (32 °F) near 07045 is April 17; after May 5 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Boonton 1 Se station.

When is the first frost in Montville, NJ?

The median first fall frost near 07045 is October 23, giving a median frost-free growing season of 189 days.

When should I plant tomatoes in 07045?

Start tomato seeds indoors around Feb 20 – Mar 6 and set transplants outside around Apr 24 – May 8, one to three weeks after the median last frost.

How much rain and snow does 07045 get?

About 49.2 inches of precipitation a year (NOAA 1991–2020 normals, Boonton 1 Se station).

How hot do summers get in Montville, NJ?

The average high peaks at 85 °F in July, with about 16 days a year at 90 °F or more.

What kind of soil does 07045 have?

The USDA soil survey maps Parsippany at the center of ZIP 07045: silt loam, poorly drained, pH about 5.8 (moderately acidic).

Did spring come early in Montville, NJ in 2026?

Spring leaf-out near 07045 came on Mar 31 in 2026, about the same as the 1991–2020 average (Apr 2), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Montville, NJ?

Long-day onions: the longest day near 07045 is 15 h 07 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 07045 change?

Yes. The 2012 USDA map put 07045 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.