Frost Dates for 11226 — Brooklyn, New York

Half of springs at Ny Ave V Brooklyn, NY see their last 32°F night by April 1; only one in ten is past it by March 16, and one in ten still has one after April 12. Planting tender crops after April 4 leaves a 30% risk of a frost on them, after April 7 20%, and after April 12 10%. The 11 days between the even-odds date and the one-in-ten date is narrower than at 97% of the 173 New York stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 19 in half of years, as early as November 6 one year in ten, and holds off past December 5 one year in ten. A hard freeze of 28°F follows 12 days later, around December 1; in spring the one-in-ten date for 28°F is April 2, 10 days before the 32°F one. The freeze-free season lasts 233 days in a typical year, longer than at 99% of the 173 New York stations; it reaches 255 days one year in ten and falls short of 215 one year in ten. On average 66 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 9 days longer, to about April 10, and return around November 6. Severe cold of 16°F or below comes in 94% of winters, usually between January 7 and February 13.

July is the warmest month at Ny Ave V Brooklyn, NY, averaging 85°F by day and 70°F at night; January is the coldest at 40°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 October the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 50% of years.

Warmth for growing adds up to 3,780 growing degree days a year (base 50°F), more than at 98% of the 173 New York stations. 32% of them (1,195) have built up by the end of June, and July adds the most, 854. Precipitation totals 47.1 inches a year, most in July (4.9") and least in February (3.0"); May to September bring 45% of it.

The nearest other station, New York Cntrl Pk Twr, NY, 9 miles north of Brooklyn, has a last frost 2 days earlier (March 30), a first frost 1 day later (November 20), a season 3 days longer.

The first measurable snow (0.1 inch or more) in Brooklyn usually arrives around December 19, and the last of the season around March 23. Those are the middle dates across the winters of 1991–2020 at Ny Ave V Brooklyn, NY, 3.8 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 9 days after the last snow.

ZIP 11226 is 4 miles from Ny Ave V Brooklyn, NY, which stands at 20 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 32 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 11226 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.