Frost Dates for 30628 — Colbert, Georgia

Half of springs at Winterville, GA see their last 32°F night by April 2; only one in ten is past it by March 15, and one in ten still has one after April 16. Planting tender crops after April 8 leaves a 30% risk of a frost on them, after April 11 20%, and after April 16 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 97% of the 127 Georgia stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 2 in half of years, as early as October 21 one year in ten, and holds off past November 17 one year in ten. A hard freeze of 28°F follows 12 days later, around November 14; in spring the one-in-ten date for 28°F is April 4, 12 days before the 32°F one. The freeze-free season lasts 217 days in a typical year, shorter than at 80% of the 127 Georgia stations; it reaches 240 days one year in ten and falls short of 196 one year in ten. On average 62 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 12 days longer, to about April 14, and return around October 25. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 85%.

July is the warmest month at Winterville, GA, averaging 88°F by day and 67°F at night; January is the coldest at 54°F and 30°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 56% of years.

Warmth for growing adds up to 4,624 growing degree days a year (base 50°F), fewer than at 85% of the 127 Georgia stations. 39% of them (1,813) have built up by the end of June, and July adds the most, 860. Precipitation totals 51.8 inches a year, most in January (4.8") and least in October (3.3"); May to September bring 42% of it.

The nearest other station, Danielsville, GA, 7 miles northwest of Colbert, has a last frost 4 days earlier (March 29), a first frost 5 days later (November 7), a season 7 days longer.

Measurable snow is rare here: only 8 of 19 winters from 1991 to 2020 recorded 0.1 inch or more at Winterville, GA, 6.6 miles away, so there is no typical first-snow date to plan around.

ZIP 30628 is 7 miles from Winterville, GA, which stands at 890 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 30683 (Winterville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30628 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.