Frost Dates for 30117 — Carrollton, Georgia

Half of springs at Carrollton, GA see their last 32°F night by March 28; only one in ten is past it by March 7, and one in ten still has one after April 12. Planting tender crops after April 2 leaves a 30% risk of a frost on them, after April 6 20%, and after April 12 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 83% of the 127 Georgia stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 5 in half of years, as early as October 23 one year in ten, and holds off past November 22 one year in ten. A hard freeze of 28°F follows 11 days later, around November 16; in spring the one-in-ten date for 28°F is March 31, 12 days before the 32°F one. The freeze-free season lasts 222 days in a typical year, shorter than at 70% of the 127 Georgia stations; it reaches 248 days one year in ten and falls short of 202 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 11 days longer, to about April 8, and return around October 26. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 78%.

July is the warmest month at Carrollton, GA, averaging 90°F by day and 69°F at night; January is the coldest at 54°F and 32°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 35% of years.

Warmth for growing adds up to 4,974 growing degree days a year (base 50°F), fewer than at 74% of the 127 Georgia stations. 40% of them (1,973) have built up by the end of June, and July adds the most, 908. Precipitation totals 53.6 inches a year, most in March (5.6") and least in August (3.7"); May to September bring 37% of it.

The nearest other station, Newnan 7 WNW, GA, 17 miles southeast of Carrollton and 200 feet lower, has a last frost 6 days later (April 3), a first frost 3 days earlier (November 2), a season 8 days shorter.

Measurable snow is rare here: only 5 of 25 winters from 1991 to 2020 recorded 0.1 inch or more at Carrollton, GA, 1.6 miles away, so there is no typical first-snow date to plan around.

ZIP 30117 is 2 miles from Carrollton, GA, which stands at 995 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 30180 (Villa Rica). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30117 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.