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Frost dates for Teterboro Airport, New Jersey

Half of years have their last spring frost by April 3, but 1 year in 10 still frosts after April 16.

A frost date is really a percentile from 30 years of records at a nearby weather station: in about half of years a frost still comes after the median date. Both numbers are below, so you can choose the risk yourself.

The odds

Last spring frost

How often a frost still comes on or after each date.

1 year in 10
April 16
1 year in 5
April 10
3 years in 10
April 7
2 years in 5
April 4
Half of years (the median)
April 3

First fall freeze

How often the first freeze comes on or before each date.

1 year in 10
October 21
1 year in 5
October 26
3 years in 10
October 30
2 years in 5
November 2
Half of years (the median)
November 4
Growing season
about 215 days
Hardiness zones nearby
7a, 7b
Summer days
a usual high of about 29 °C85 °F
Lettuce and spinach run to seed
June to September, in hot, long days (how we know)

Summer and rain

A growing garden needs about 25 mm1 in of water a week, rain and watering together. Here is what a normal month brings.

Month by month

January
high ~4 °C40 °F · low ~-4 °C26 °F · rain ~83 mm3.3 in
February
high ~6 °C43 °F · low ~-3 °C27 °F · rain ~72 mm2.8 in
March
high ~10 °C51 °F · low ~1 °C34 °F · rain ~104 mm4.1 in
April
high ~17 °C62 °F · low ~6 °C44 °F · rain ~101 mm4 in
May
high ~23 °C73 °F · low ~12 °C53 °F · rain ~100 mm3.9 in
June
high ~28 °C82 °F · low ~17 °C63 °F · rain ~108 mm4.2 in
July
high ~31 °C87 °F · low ~20 °C69 °F · rain ~113 mm4.4 in
August
high ~30 °C85 °F · low ~20 °C67 °F · rain ~108 mm4.2 in
September
high ~26 °C78 °F · low ~16 °C60 °F · rain ~104 mm4.1 in
October
high ~19 °C67 °F · low ~9 °C48 °F · rain ~95 mm3.7 in
November
high ~13 °C56 °F · low ~4 °C38 °F · rain ~84 mm3.3 in
December
high ~7 °C45 °F · low ~-1 °C31 °F · rain ~104 mm4.1 in

Where these numbers come from

NOAA NCEI 1991–2020 Climate Normals, the Teterboro Airport station (listed by NOAA as Teterboro Ap, USW00094741), at 40.85, -74.06. These are that station’s own records, unshifted. The further your garden is from it, the less exactly they describe your ground. The planner finds the nearest station to your garden and lowers its confidence with distance, so no number is presented as if it were measured in your garden.

Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a few hundred feet away does not. No table can know that about your garden. A few seasons of your own logged frosts can.

ZIP codes nearest this station

07011, 07012, 07013, 07014, 07024, 07026, 07055, 07057, 07070, 07072, 07073, 07074, 07075, 07407, 07410, 07450, 07452, 07501, 07503, 07504, 07505, 07513, 07514, 07522, 07524, 07601, 07603, 07604, 07605, 07606, 07607, 07608, 07621, 07628, 07630, 07631, 07641, 07643, 07644, 07646, 07649, 07650, 07652, 07657, 07660, 07661, 07662, 07663, 07666, 07670, 07676, 07677.

What can I plant here, and when? ›

Nearby stations

The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.

Other stations in New Jersey.

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