Frost Dates for 30277 — Sharpsburg, Georgia

Half of springs at Atlanta, GA see their last 32°F night by March 26; only one in ten is past it by March 4, and one in ten still has one after April 13. Planting tender crops after April 2 leaves a 30% risk of a frost on them, after April 7 20%, and after April 13 10%. The 18 days between the even-odds date and the one-in-ten date is narrower than at 41% of the 127 Georgia stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 6 in half of years, as early as October 25 one year in ten, and holds off past November 24 one year in ten. A hard freeze of 28°F follows 14 days later, around November 20; in spring the one-in-ten date for 28°F is March 31, 13 days before the 32°F one. The freeze-free season lasts 226 days in a typical year, shorter than at 65% of the 127 Georgia stations; it reaches 254 days one year in ten and falls short of 204 one year in ten. On average 65 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 April 8, and return around October 29. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 62%.

July is the warmest month at Atlanta, GA, averaging 91°F by day and 71°F at night; January is the coldest at 56°F and 34°F. A freezing night is all but certain in every month from November to February (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 90% of years and April still brings one in 34% of years.

Warmth for growing adds up to 5,434 growing degree days a year (base 50°F), fewer than at 52% of the 127 Georgia stations. 40% of them (2,182) have built up by the end of June, and July adds the most, 953. Precipitation totals 49.4 inches a year, most in March (4.9") and least in May (3.1"); May to September bring 40% of it.

The nearest other station, Newnan 7 WNW, GA, 15 miles west of Sharpsburg, has a last frost 8 days later (April 3), a first frost 4 days earlier (November 2), a season 12 days shorter.

Measurable snow is rare here: only 9 of 23 winters from 1991 to 2020 recorded 0.1 inch or more at Jonesboro, GA, 20 miles away, so there is no typical first-snow date to plan around.

ZIP 30277 is 5 miles from Atlanta, GA, which stands at 858 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 9 other ZIP codes share the station; its figures are presented in full for 30269 (Peachtree City). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30277 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.