Frost Dates for 14787 — Westfield, New York

Half of springs at Westfield 2 SSE, NY see their last 32°F night by April 21; only one in ten is past it by April 8, and one in ten still has one after May 5. Planting tender crops after April 27 leaves a 30% risk of a frost on them, after May 1 20%, and after May 5 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 November 5 in half of years, as early as October 23 one year in ten, and holds off past November 19 one year in ten. A hard freeze of 28°F follows 9 days later, around November 14; in spring the one-in-ten date for 28°F is April 23, 12 days before the 32°F one. The freeze-free season lasts 197 days in a typical year, longer than at 88% of the 173 New York stations; it reaches 216 days one year in ten and falls short of 176 one year in ten. On average 117 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 1, and return around October 26. Severe cold of 16°F or below comes every winter, usually between December 15 and March 14.

July is the warmest month at Westfield 2 SSE, NY, averaging 83°F by day and 64°F at night; January is the coldest at 34°F and 21°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 21% of years.

Warmth for growing adds up to 3,049 growing degree days a year (base 50°F), more than at 85% of the 173 New York stations. 33% of them (993) have built up by the end of June, and July adds the most, 724. Precipitation totals 43.6 inches a year, most in October (4.9") and least in February (2.4"); May to September bring 46% of it.

The nearest other station, Portland1 SW, NY, 5 miles northeast of Westfield, has a last frost 4 days later (April 25), a first frost 5 days earlier (October 31), a season 10 days shorter.

The first measurable snow (0.1 inch or more) in Westfield usually arrives around November 2, and the last of the season around April 14. Those are the middle dates across the winters of 1991–2020 at Sherman, NY, 11.8 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 7 days after the last snow.

ZIP 14787 is 2 miles from Westfield 2 SSE, NY, which stands at 707 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 16428 (North East). The 2023 USDA Plant Hardiness Zone Map lists ZIP 14787 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.