Frost Dates for 18328 — Dingmans Ferry, Pennsylvania

Half of springs at Sussex 3 WNW, NJ see their last 32°F night by April 30; only one in ten is past it by April 17, and one in ten still has one after May 18. Planting tender crops after May 7 leaves a 30% risk of a frost on them, after May 11 20%, and after May 18 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 70% of the 176 Pennsylvania stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 11 in half of years, as early as September 30 one year in ten, and holds off past October 27 one year in ten. A hard freeze of 28°F follows 13 days later, around October 24; in spring the one-in-ten date for 28°F is May 5, 13 days before the 32°F one. The freeze-free season lasts 163 days in a typical year, shorter than at 70% of the 176 Pennsylvania stations; it reaches 184 days one year in ten and falls short of 140 one year in ten. On average 146 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 14 days longer, to about May 14, and return around October 2. Severe cold of 16°F or below comes every winter, usually between December 1 and March 14.

July is the warmest month at Sussex 3 WNW, NJ, averaging 83°F by day and 60°F at night; January is the coldest at 35°F and 17°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 49% of years.

Warmth for growing adds up to 2,682 growing degree days a year (base 50°F), fewer than at 68% of the 176 Pennsylvania stations. 32% of them (859) have built up by the end of June, and July adds the most, 676. Precipitation totals 48.9 inches a year, most in June (5.2") and least in February (2.7"); May to September bring 47% of it.

The nearest other station, Matamoras, PA, 16 miles northeast of Dingmans Ferry and 208 feet lower, has a last frost 2 days later (May 2), a first frost 1 day later (October 12), a season 1 day longer.

The first measurable snow (0.1 inch or more) in Dingmans Ferry usually arrives around December 6, and the last of the season around March 20. Those are the middle dates across the winters of 1991–2020 at Sussex 3 WNW, NJ, 15.5 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 41 days after the last snow.

ZIP 18328 is 16 miles from Sussex 3 WNW, NJ, which stands at 667 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 18328 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.