Frost Dates for 14469 — Bloomfield, New York

Half of springs at Honeoye, NY see their last 32°F night by May 10; only one in ten is past it by April 25, and one in ten still has one after May 27. Planting tender crops after May 16 leaves a 30% risk of a frost on them, after May 21 20%, and after May 27 10%. The 17 days between the even-odds date and the one-in-ten date is wider than at 90% of the 173 New York stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 4 in half of years, as early as September 22 one year in ten, and holds off past October 20 one year in ten. A hard freeze of 28°F follows 16 days later, around October 20; in spring the one-in-ten date for 28°F is May 15, 12 days before the 32°F one. The freeze-free season lasts 147 days in a typical year, shorter than at 77% of the 173 New York stations; it reaches 168 days one year in ten and falls short of 127 one year in ten. On average 144 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 24, and return around September 23. Severe cold of 16°F or below comes every winter, usually between November 29 and March 27.

July is the warmest month at Honeoye, NY, averaging 81°F by day and 58°F at night; January is the coldest at 33°F and 16°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 74% of years.

Warmth for growing adds up to 2,446 growing degree days a year (base 50°F), fewer than at 54% of the 173 New York stations. 32% of them (794) have built up by the end of June, and July adds the most, 600. Precipitation totals 37.4 inches a year, most in July (4.3") and least in February (1.9"); May to September bring 50% of it.

The nearest other station, Canandaigua 3 S, NY, 9 miles east of Bloomfield, has a last frost 11 days earlier (April 29), a first frost 18 days later (October 22), a season 28 days longer.

The first measurable snow (0.1 inch or more) in Bloomfield usually arrives around November 17, and the last of the season around April 3. Those are the middle dates across the winters of 1991–2020 at Honeoye, NY, 6.2 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 37 days after the last snow.

ZIP 14469 is 6 miles from Honeoye, NY, which stands at 800 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 14469 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.