Frost Dates for 08048 — Lumberton, New Jersey

Half of springs at Mt Holly S Jersey Airport, NJ see their last 32°F night by April 15; only one in ten is past it by March 31, and one in ten still has one after May 2. Planting tender crops after April 21 leaves a 30% risk of a frost on them, after April 25 20%, and after May 2 10%. The 17 days between the even-odds date and the one-in-ten date is wider than at 64% of the 56 New Jersey stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 28 in half of years, as early as October 12 one year in ten, and holds off past November 9 one year in ten. A hard freeze of 28°F follows 11 days later, around November 8; in spring the one-in-ten date for 28°F is April 15, 17 days before the 32°F one. The freeze-free season lasts 195 days in a typical year, longer than at 52% of the 56 New Jersey stations; it reaches 215 days one year in ten and falls short of 173 one year in ten. On average 99 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 13 days longer, to about April 28, and return around October 16. Severe cold of 16°F or below comes every winter, usually between December 22 and February 22.

July is the warmest month at Mt Holly S Jersey Airport, NJ, averaging 87°F by day and 66°F at night; January is the coldest at 41°F and 25°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 88% of years and May still brings one in 11% of years.

Warmth for growing adds up to 3,591 growing degree days a year (base 50°F), more than at 61% of the 56 New Jersey stations. 34% of them (1,214) have built up by the end of June, and July adds the most, 825. Precipitation totals 42.9 inches a year, most in July (5.2") and least in February (2.6"); May to September bring 46% of it.

The nearest other station, Philadelphia/Mt Holly WFO, NJ, 3 miles north of Lumberton, has the same 50% last-frost date, a first frost 1 day later (October 29), a season 1 day longer.

The first measurable snow (0.1 inch or more) in Lumberton usually arrives around December 6, and the last of the season around March 22. Those are the middle dates across the winters of 1991–2020 at Philadelphia/Mt Holly WFO, NJ, 3.3 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 24 days after the last snow.

ZIP 08048 is 2 miles from Mt Holly S Jersey Airport, NJ, which stands at 53 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 08053 (Marlton). The 2023 USDA Plant Hardiness Zone Map lists ZIP 08048 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.