Frost Dates for 30019 — Dacula, Georgia

Half of springs at Winder 4S, GA see their last 32°F night by April 3; only one in ten is past it by March 18, and one in ten still has one after April 17. Planting tender crops after April 9 leaves a 30% risk of a frost on them, after April 13 20%, and after April 17 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 7 in half of years, as early as October 27 one year in ten, and holds off past November 26 one year in ten. A hard freeze of 28°F follows 13 days later, around November 20; in spring the one-in-ten date for 28°F is April 6, 11 days before the 32°F one. The freeze-free season lasts 219 days in a typical year, shorter than at 76% of the 127 Georgia stations; it reaches 242 days one year in ten and falls short of 199 one year in ten. On average 59 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 15, and return around October 30. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 80%.

July is the warmest month at Winder 4S, GA, averaging 89°F by day and 68°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 59% of years.

Warmth for growing adds up to 4,868 growing degree days a year (base 50°F), fewer than at 78% of the 127 Georgia stations. 39% of them (1,876) have built up by the end of June, and July adds the most, 885. Precipitation totals 50.9 inches a year, most in March (5.2") and least in December (2.5"); May to September bring 43% of it.

The nearest other station, Gainesville Gilmer Airport, GA, 20 miles north of Dacula and 386 feet higher, has a last frost 14 days earlier (March 20), a first frost 7 days later (November 14), a season 20 days longer.

Measurable snow is rare here: only 4 of 16 winters from 1991 to 2020 recorded 0.1 inch or more at Winder 4S, GA, 9.7 miles away, so there is no typical first-snow date to plan around.

ZIP 30019 is 10 miles from Winder 4S, GA, which stands at 889 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 30052 (Loganville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30019 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.