Frost Dates for 12845 — Lake George, New York

Half of springs at Glens Falls Airport, NY see their last 32°F night by May 9; only one in ten is past it by April 27, and one in ten still has one after May 25. Planting tender crops after May 15 leaves a 30% risk of a frost on them, after May 19 20%, and after May 25 10%. The 16 days between the even-odds date and the one-in-ten date is wider than at 71% of the 173 New York stations behind this site's ZIP pages.

In fall the first 32°F night comes by September 30 in half of years, as early as September 18 one year in ten, and holds off past October 13 one year in ten. A hard freeze of 28°F follows 9 days later, around October 9; in spring the one-in-ten date for 28°F is May 13, 12 days before the 32°F one. The freeze-free season lasts 143 days in a typical year, shorter than at 87% of the 173 New York stations; it reaches 161 days one year in ten and falls short of 121 one year in ten. On average 160 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 23, and return around September 21. Severe cold of 16°F or below comes every winter, usually between November 19 and March 29.

July is the warmest month at Glens Falls Airport, NY, averaging 82°F by day and 58°F at night; January is the coldest at 30°F and 10°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 75% of years.

Warmth for growing adds up to 2,263 growing degree days a year (base 50°F), fewer than at 68% of the 173 New York stations. 32% of them (723) have built up by the end of June, and July adds the most, 609. Precipitation totals 38.4 inches a year, most in July (4.3") and least in February (2.0"); May to September bring 47% of it.

The nearest other station, Glens Falls Farm, NY, 7 miles south of Lake George and 183 feet higher, has a last frost 8 days later (May 17), a first frost 1 day earlier (September 29), a season 8 days shorter.

The first measurable snow (0.1 inch or more) in Lake George usually arrives around November 24, and the last of the season around March 27. Those are the middle dates across the winters of 1991–2020 at Glens Falls Farm, NY, 6.7 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 43 days after the last snow.

ZIP 12845 is 7 miles from Glens Falls Airport, NY, which stands at 321 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 12839 (Hudson Falls). The 2023 USDA Plant Hardiness Zone Map lists ZIP 12845 in zone 5a, the band where the coldest night of the year averaged -20 to -15°F (-28.9 to -26.1°C) over 1991–2020; a zone describes winter lows, not frost dates.