Frost Dates for 14546 — Scottsville, New York

Half of springs at Avon, NY see their last 32°F night by May 3; only one in ten is past it by April 20, and one in ten still has one after May 15. Planting tender crops after May 7 leaves a 30% risk of a frost on them, after May 11 20%, and after May 15 10%. The 12 days between the even-odds date and the one-in-ten date is narrower than at 94% of the 173 New York stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 15 in half of years, as early as October 1 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 14 days later, around October 29; in spring the one-in-ten date for 28°F is May 6, 9 days before the 32°F one. The freeze-free season lasts 163 days in a typical year, longer than at 50% of the 173 New York stations; it reaches 182 days one year in ten and falls short of 144 one year in ten. On average 143 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 10 days longer, to about May 13, and return around October 1. Severe cold of 16°F or below comes every winter, usually between December 1 and March 22.

July is the warmest month at Avon, NY, averaging 82°F by day and 60°F at night; January is the coldest at 32°F and 16°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 58% of years.

Warmth for growing adds up to 2,554 growing degree days a year (base 50°F), more than at 55% of the 173 New York stations. 32% of them (821) have built up by the end of June, and July adds the most, 642. Precipitation totals 33.7 inches a year, most in July (3.7") and least in February (1.7"); May to September bring 50% of it.

The nearest other station, Rochester Gtr International Airport, NY, 8 miles northeast of Scottsville, has a last frost 9 days earlier (April 24), a first frost 10 days later (October 25), a season 18 days longer.

The first measurable snow (0.1 inch or more) in Scottsville usually arrives around November 20, and the last of the season around March 31. Those are the middle dates across the winters of 1991–2020 at Avon, NY, 7.7 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 33 days after the last snow.

ZIP 14546 is 8 miles from Avon, NY, which stands at 545 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 14414 (Avon). The 2023 USDA Plant Hardiness Zone Map lists ZIP 14546 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.