Frost Dates for 14821 — Campbell, New York

Half of springs at Addison, NY 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 28. Planting tender crops after May 20 leaves a 30% risk of a frost on them, after May 23 20%, and after May 28 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 63% of the 173 New York stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 5 in half of years, as early as September 23 one year in ten, and holds off past October 21 one year in ten. A hard freeze of 28°F follows 14 days later, around October 19; in spring the one-in-ten date for 28°F is May 18, 10 days before the 32°F one. The freeze-free season lasts 144 days in a typical year, shorter than at 83% of the 173 New York stations; it reaches 165 days one year in ten and falls short of 123 one year in ten. On average 165 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 25. Severe cold of 16°F or below comes every winter, usually between November 24 and March 30.

July is the warmest month at Addison, NY, averaging 82°F by day and 56°F at night; January is the coldest at 33°F and 14°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 85% of years.

Warmth for growing adds up to 2,277 growing degree days a year (base 50°F), fewer than at 66% of the 173 New York stations. 31% of them (704) have built up by the end of June, and July adds the most, 592. Precipitation totals 36.1 inches a year, most in July (4.2") and least in February (1.6"); May to September bring 51% of it.

The nearest other station, Corning, NY, 10 miles southeast of Campbell, has a last frost 3 days later (May 17), a first frost 3 days earlier (October 2), a season 5 days shorter.

The first measurable snow (0.1 inch or more) in Campbell usually arrives around November 18, and the last of the season around April 1. Those are the middle dates across the winters of 1991–2020 at Addison, NY, 9.4 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 43 days after the last snow.

ZIP 14821 is 9 miles from Addison, NY, which stands at 999 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 14801 (Addison). The 2023 USDA Plant Hardiness Zone Map lists ZIP 14821 in zone 5b, the band where the coldest night of the year averaged -15 to -10°F (-26.1 to -23.3°C) over 1991–2020; a zone describes winter lows, not frost dates.