Frost Dates for 31510 — Alma, Georgia

Half of springs at Alma Bacon Co Airport, GA see their last 32°F night by March 11; only one in ten is past it by February 17, and one in ten still has one after March 30. Planting tender crops after March 19 leaves a 30% risk of a frost on them, after March 23 20%, and after March 30 10%. The 19 days between the even-odds date and the one-in-ten date is wider than at 60% of the 127 Georgia stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 20 in half of years, as early as November 5 one year in ten, and holds off past December 12 one year in ten. A hard freeze of 28°F follows 17 days later, around December 7; in spring the one-in-ten date for 28°F is March 16, 14 days before the 32°F one. The freeze-free season lasts 256 days in a typical year, longer than at 79% of the 127 Georgia stations; it reaches 287 days one year in ten and falls short of 230 one year in ten. On average 23 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 March 24, and return around November 9. Nights of 24°F, cold enough to damage hardier plants, come in 86% of winters and 16°F in 14%.

July is the warmest month at Alma Bacon Co Airport, GA, averaging 93°F by day and 72°F at night; January is the coldest at 63°F and 39°F. A freezing night is all but certain in every month from December to January (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 88% of years and March still brings one in 72% of years.

Warmth for growing adds up to 6,629 growing degree days a year (base 50°F), more than at 93% of the 127 Georgia stations. 42% of them (2,779) have built up by the end of June, and July adds the most, 1,004. Precipitation totals 44.8 inches a year, most in August (5.4") and least in November (2.2"); May to September bring 50% of it.

The nearest other station, Surrency, GA, 18 miles northeast of Alma, has a last frost 6 days later (March 17), a first frost 4 days earlier (November 16), a season 11 days shorter.

Measurable snow is rare here: only 1 of 26 winters from 1991 to 2020 recorded 0.1 inch or more at Alma Bacon Co Airport, GA, 3.7 miles away, so there is no typical first-snow date to plan around.

ZIP 31510 is 4 miles from Alma Bacon Co Airport, GA, which stands at 193 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 31510 in zone 9a, the band where the coldest night of the year averaged 20 to 25°F (-6.7 to -3.9°C) over 1991–2020; a zone describes winter lows, not frost dates.