Frost Dates for 30316 — Atlanta, Georgia

Half of springs at Atlanta Hartsfield International Airport, GA see their last 32°F night by March 15; only one in ten is past it by February 23, and one in ten still has one after April 4. Planting tender crops after March 23 leaves a 30% risk of a frost on them, after March 28 20%, and after April 4 10%. The 20 days between the even-odds date and the one-in-ten date is wider than at 70% 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 4 one year in ten, and holds off past December 10 one year in ten. A hard freeze of 28°F follows 15 days later, around December 5; in spring the one-in-ten date for 28°F is March 20, 15 days before the 32°F one. The freeze-free season lasts 252 days in a typical year, longer than at 71% of the 127 Georgia stations; it reaches 281 days one year in ten and falls short of 226 one year in ten. On average 36 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 March 29, and return around November 7. Nights of 24°F, cold enough to damage hardier plants, come in 97% of winters and 16°F in 54%.

July is the warmest month at Atlanta Hartsfield International Airport, GA, averaging 90°F by day and 72°F at night; January is the coldest at 54°F and 36°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 77% of years and April still brings one in 15% of years.

Warmth for growing adds up to 5,606 growing degree days a year (base 50°F), more than at 52% of the 127 Georgia stations. 40% of them (2,255) have built up by the end of June, and July adds the most, 959. Precipitation totals 50.6 inches a year, most in July (4.8") and least in October (3.3"); May to September bring 42% of it.

The nearest other station, Atlanta Peachtree Airport, GA, 10 miles north of Atlanta, has a last frost 10 days later (March 25), a first frost 11 days earlier (November 9), a season 24 days shorter.

Measurable snow is rare here: only 4 of 23 winters from 1991 to 2020 recorded 0.1 inch or more at Atlanta 9NW, GA, 11.1 miles away, so there is no typical first-snow date to plan around.

ZIP 30316 is 9 miles from Atlanta Hartsfield International Airport, GA, which stands at 1,010 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 11 other ZIP codes share the station; its figures are presented in full for 30349 (Atlanta). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30316 in zone 8a, the band where the coldest night of the year averaged 10 to 15°F (-12.2 to -9.4°C) over 1991–2020; a zone describes winter lows, not frost dates.