Frost Dates for 11050 — Port Washington, New York

Half of springs at Mineola, NY see their last 32°F night by April 2; only one in ten is past it by March 18, and one in ten still has one after April 16. Planting tender crops after April 8 leaves a 30% risk of a frost on them, after April 11 20%, and after April 16 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 12 in half of years, as early as October 31 one year in ten, and holds off past December 1 one year in ten. A hard freeze of 28°F follows 13 days later, around November 25; in spring the one-in-ten date for 28°F is April 4, 12 days before the 32°F one. The freeze-free season lasts 224 days in a typical year, longer than at 97% of the 173 New York stations; it reaches 245 days one year in ten and falls short of 204 one year in ten. On average 83 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 April 16, and return around October 31. Severe cold of 16°F or below comes in 93% of winters, usually between January 7 and February 12.

July is the warmest month at Mineola, NY, averaging 87°F by day and 68°F at night; January is the coldest at 42°F and 27°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 60% of years.

Warmth for growing adds up to 3,682 growing degree days a year (base 50°F), more than at 97% of the 173 New York stations. 32% of them (1,168) have built up by the end of June, and July adds the most, 840. Precipitation totals 45.4 inches a year, most in March (4.4") and least in February (3.0"); May to September bring 42% of it.

The nearest other station, Bronx, NY, 8 miles west of Port Washington, has a last frost 1 day earlier (April 1), a first frost 4 days later (November 16), a season 6 days longer.

The first measurable snow (0.1 inch or more) in Port Washington usually arrives around December 24, and the last of the season around March 3. Those are the middle dates across the winters of 1991–2020 at Mineola, NY, 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 30 days after the last snow.

ZIP 11050 is 8 miles from Mineola, NY, which stands at 96 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 32 other ZIP codes share the station; its figures are presented in full for 11550 (Hempstead). The 2023 USDA Plant Hardiness Zone Map lists ZIP 11050 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.