When is the last frost in Jersey City, NJ?

The average last spring frost (50% probability of 32°F) in Jersey City is around March 30, based on NOAA/NCEI 1991–2020 normals at the New York Cntrl Pk Twr, NY station (5.7 mi away). Half of years it falls outside that date, so wait 1–2 weeks past it before setting out frost-tender plants.

When is the first fall frost in Jersey City?

The average first fall frost in Jersey City, NJ is around November 20, giving roughly a 236-day frost-free growing season.

What planting zone is Jersey City, NJ?

Jersey City is in USDA plant hardiness zone 7b (average annual extreme minimum temperature 5 to 10°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Jersey City?

In Jersey City, NJ the warmest month is July (avg high 84.9°F) and the coldest is January (avg low 27.9°F). It averages about 49.5″ of precipitation a year and 29.8″ of snow.

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Jersey City, NJ Planting Calendar & Frost Dates

USDA hardiness zone 7b · ZIP 07302 · elevation 40′ · NOAA & USDA data

Jersey City is in USDA hardiness zone 7b (winters can dip to 5 to 10°F), with a growing season of about 236 days between the average last spring frost (March 30) and first fall frost (November 20). The warmest month is July (avg high 84.9°F); the coldest is January (avg low 27.9°F). It averages 49.5″ of precipitation a year and 29.8″ of snow, mostly mid-winter. Start cool-season crops several weeks before the last frost; wait until after it for tomatoes, peppers and other tender crops.

Hardiness zone

min temp 5 to 10°F

Last spring frost

March 30

avg (50% prob, 32°F)

First fall frost

November 20

avg (50% prob, 32°F)

Growing season

236 days

frost-free window

Warmest month

July

avg high 84.9°F

Month-by-month typical weather in Jersey City

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at New York Cntrl Pk Twr, NY (5.7 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	39.5	27.9	33.7	3.6	8.8
February	42.2	29.5	35.9	3.2	10.1
March	49.9	35.8	42.8	4.3	5
April	61.8	45.5	53.7	4.1	0.4
May	71.4	55	63.2	4	0
June	79.7	64.4	72	4.5	0
July	84.9	70.1	77.5	4.6	0
August	83.3	68.9	76.1	4.6	0
September	76.2	62.3	69.2	4.3	0
October	64.5	51.4	57.9	4.4	0.1
November	54	42	48	3.6	0.5
December	44.3	33.8	39.1	4.4	4.9

What to plant when in Jersey City

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: February 16 · Transplant out: April 6
Peppers	warm	Start seeds indoors: February 2 · Transplant out: April 13
Cucumbers	warm	Direct sow: April 6
Zucchini / squash	warm	Direct sow: April 6
Bush beans	warm	Direct sow: April 6
Sweet corn	warm	Direct sow: April 6
Basil	warm	Transplant out: April 6
Peas	cool	Sow (spring): February 23 · Sow (fall): September 25
Spinach	cool	Sow (spring): February 16 · Sow (fall): September 25
Lettuce	cool	Sow (spring): March 2 · Sow (fall): September 25
Kale	cool	Transplant (spring): March 9 · Sow (fall): September 11
Broccoli	cool	Transplant (spring): March 16
Carrots	cool	Sow (spring): March 9 · Sow (fall): September 11
Onions	cool	Transplant (spring): March 2
Potatoes	cool	Plant seed potatoes: March 16
Radishes	cool	Sow (spring): March 2 · Sow (fall): October 9

Dates are computed from Jersey City's average frost dates using standard cool-/warm-season timing. They're a starting point — a cold spring, a warm microclimate, or a fast-maturing variety can shift them by a week or two.

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Gear that helps you plant on time

Some links below are Amazon affiliate links (tag theboringthin-20). If you buy through them we may earn a small commission at no extra cost to you — it keeps this almanac free. We only list generic, genuinely-useful categories.

Soil thermometer →Know when the ground is warm enough to sow — the honest signal, not the calendar.Seed-starting trays + dome →Start tomatoes & peppers indoors on the schedule below.Seedling heat mat →Warms the soil for faster, more even germination indoors.Floating row cover / frost cloth →Buys you 4–8°F to beat an early or late frost.Raised garden bed kit →Warms and drains faster in spring than in-ground soil.Garden gloves →Basic kit for transplant day.

Nearby cities in New Jersey

Hoboken, NJ Union City, NJ Kearny, NJ West New York, NJ Bayonne, NJ Newark, NJ Elizabeth, NJ East Orange, NJ

Sources & method. Hardiness zone: 2023 USDA Plant Hardiness Zone Map (PRISM Climate Group, Oregon State University). Frost dates & growing season: NOAA/NCEI 1991–2020 U.S. Climate Normals, nearest station with published freeze normals — New York Cntrl Pk Twr, NY, 5.7 mi (confidence: high). Monthly weather normals: New York Cntrl Pk Twr, NY, 5.7 mi (confidence: high). ZIP centroid from U.S. Census 2023 ZCTA data. Frost dates are the 50%-probability date — half of years frost occurs outside the stated date. Nothing here is invented; where the nearest station is far, we say so. Last updated 2026-07-22.