Frost Dates for 18623 — Laceyville, Pennsylvania

Half of springs at Dushore, PA see their last 32°F night by May 14; only one in ten is past it by April 28, and one in ten still has one after May 27. Planting tender crops after May 20 leaves a 30% risk of a frost on them, after May 23 20%, and after May 27 10%. The 13 days between the even-odds date and the one-in-ten date is narrower than at 94% of the 176 Pennsylvania stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 2 in half of years, as early as September 20 one year in ten, and holds off past October 16 one year in ten. A hard freeze of 28°F follows 13 days later, around October 15; in spring the one-in-ten date for 28°F is May 18, 9 days before the 32°F one. The freeze-free season lasts 143 days in a typical year, shorter than at 91% of the 176 Pennsylvania stations; it reaches 162 days one year in ten and falls short of 122 one year in ten. On average 166 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 11 days longer, to about May 25, and return around September 23. Severe cold of 16°F or below comes every winter, usually between November 25 and March 27.

July is the warmest month at Dushore, PA, averaging 80°F by day and 56°F at night; January is the coldest at 32°F and 15°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 82% of years.

Warmth for growing adds up to 2,111 growing degree days a year (base 50°F), fewer than at 92% of the 176 Pennsylvania stations. 32% of them (675) have built up by the end of June, and July adds the most, 553. Precipitation totals 43.5 inches a year, most in July (4.5") and least in February (2.3"); May to September bring 49% of it.

The nearest other station, Towanda 1 S, PA, 17 miles northwest of Laceyville and 770 feet lower, has a last frost 12 days earlier (May 2), a first frost 13 days later (October 15), a season 22 days longer.

The first measurable snow (0.1 inch or more) in Laceyville usually arrives around November 20, and the last of the season around March 26. Those are the middle dates across the winters of 1991–2020 at Dushore, PA, 16 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 49 days after the last snow.

ZIP 18623 is 16 miles from Dushore, PA, which stands at 1,530 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 18623 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°C) over 1991–2020; a zone describes winter lows, not frost dates.