Frost Dates for 11710 — Bellmore, New York

Half of springs at Wantagh Cedar Creek, NY see their last 32°F night by April 3; only one in ten is past it by March 19, and one in ten still has one after April 18. Planting tender crops after April 9 leaves a 30% risk of a frost on them, after April 13 20%, and after April 18 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 29% of the 173 New York stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 11 in half of years, as early as October 31 one year in ten, and holds off past November 30 one year in ten. A hard freeze of 28°F follows 12 days later, around November 23; in spring the one-in-ten date for 28°F is April 5, 13 days before the 32°F one. The freeze-free season lasts 221 days in a typical year, longer than at 95% of the 173 New York stations; it reaches 244 days one year in ten and falls short of 202 one year in ten. On average 77 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 13 days longer, to about April 16, and return around October 30. Severe cold of 16°F or below comes in 93% of winters, usually between January 7 and February 9.

July is the warmest month at Wantagh Cedar Creek, NY, averaging 85°F by day and 69°F at night; January is the coldest at 42°F and 28°F. A freezing night is all but certain in every month from December to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 64% of years.

Warmth for growing adds up to 3,651 growing degree days a year (base 50°F), more than at 97% of the 173 New York stations. 30% of them (1,101) have built up by the end of June, and July adds the most, 834. Precipitation totals 42.8 inches a year, most in December (4.4") and least in February (2.8"); May to September bring 41% of it.

The nearest other station, Oceanside, NY, 6 miles southwest of Bellmore, has a last frost 4 days later (April 7), a first frost 3 days earlier (November 8), a season 9 days shorter.

The first measurable snow (0.1 inch or more) in Bellmore usually arrives around December 20, and the last of the season around March 23. Those are the middle dates across the winters of 1991–2020 at Oceanside, NY, 5.6 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 11 days after the last snow.

ZIP 11710 is 2 miles from Wantagh Cedar Creek, NY, which stands at 10 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 6 other ZIP codes share the station; its figures are presented in full for 11758 (Massapequa). The 2023 USDA Plant Hardiness Zone Map lists ZIP 11710 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.