Frost Dates for 07032 — Kearny, New Jersey

Half of springs at Harrison, NJ see their last 32°F night by April 4; only one in ten is past it by March 23, and one in ten still has one after April 16. Planting tender crops after April 8 leaves a 30% risk of a frost on them, after April 11 20%, and after April 16 10%. The 12 days between the even-odds date and the one-in-ten date is narrower than at 91% of the 56 New Jersey stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 6 in half of years, as early as October 25 one year in ten, and holds off past November 22 one year in ten. A hard freeze of 28°F follows 13 days later, around November 19; in spring the one-in-ten date for 28°F is April 5, 11 days before the 32°F one. The freeze-free season lasts 216 days in a typical year, longer than at 82% of the 56 New Jersey stations; it reaches 237 days one year in ten and falls short of 197 one year in ten. On average 83 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 12 days longer, to about April 16, and return around October 27. Severe cold of 16°F or below comes every winter, usually between December 30 and February 25.

July is the warmest month at Harrison, NJ, averaging 87°F by day and 69°F at night; January is the coldest at 39°F and 25°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 70% of years.

Warmth for growing adds up to 3,759 growing degree days a year (base 50°F), more than at 77% of the 56 New Jersey stations. 33% of them (1,242) have built up by the end of June, and July adds the most, 863. Precipitation totals 50.7 inches a year, most in June (4.9") and least in February (3.3"); May to September bring 45% of it.

The nearest other station, Newark International Airport, NJ, 6 miles south of Kearny, has a last frost 2 days earlier (April 2), a first frost 4 days later (November 10), a season 6 days longer.

The first measurable snow (0.1 inch or more) in Kearny usually arrives around December 10, and the last of the season around March 18. Those are the middle dates across the winters of 1991–2020 at Harrison, NJ, 1.3 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 17 days after the last snow.

ZIP 07032 is 1 mile from Harrison, NJ, which stands at 24 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 17 other ZIP codes share the station; its figures are presented in full for 07105 (Newark). The 2023 USDA Plant Hardiness Zone Map lists ZIP 07032 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.