Frost Dates for 30507 — Gainesville, Georgia

Half of springs at Gainesville Gilmer Airport, GA see their last 32°F night by March 20; only one in ten is past it by March 1, and one in ten still has one after April 6. Planting tender crops after March 28 leaves a 30% risk of a frost on them, after April 1 20%, and after April 6 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 56% of the 127 Georgia stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 14 in half of years, as early as October 31 one year in ten, and holds off past December 4 one year in ten. A hard freeze of 28°F follows 16 days later, around November 30; in spring the one-in-ten date for 28°F is March 26, 11 days before the 32°F one. The freeze-free season lasts 239 days in a typical year, longer than at 57% of the 127 Georgia stations; it reaches 266 days one year in ten and falls short of 214 one year in ten. On average 42 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 April 3, and return around November 3. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 60%.

July is the warmest month at Gainesville Gilmer Airport, GA, averaging 88°F by day and 70°F at night; January is the coldest at 51°F and 34°F. A freezing night is all but certain in every month from December 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 88% of years and April still brings one in 21% of years.

Warmth for growing adds up to 4,904 growing degree days a year (base 50°F), fewer than at 76% of the 127 Georgia stations. 39% of them (1,925) have built up by the end of June, and July adds the most, 893. Precipitation totals 52.5 inches a year, most in January (5.0") and least in September (3.9"); May to September bring 40% of it.

The nearest other station, Gainesville, GA, 6 miles northwest of Gainesville, has a last frost 7 days later (March 27), a first frost 2 days earlier (November 12), a season 8 days shorter.

Measurable snow is rare here: only 5 of 21 winters from 1991 to 2020 recorded 0.1 inch or more at Commerce 4 NNW, GA, 16.2 miles away, so there is no typical first-snow date to plan around.

ZIP 30507 is 4 miles from Gainesville Gilmer Airport, GA, which stands at 1,275 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 4 other ZIP codes share the station; its figures are presented in full for 30542 (Flowery Branch). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30507 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.