Frost Dates for 30206 — Concord, Georgia

Half of springs at Experiment, GA see their last 32°F night by March 20; only one in ten is past it by February 25, and one in ten still has one after April 10. Planting tender crops after March 29 leaves a 30% risk of a frost on them, after April 3 20%, and after April 10 10%. The 21 days between the even-odds date and the one-in-ten date is wider than at 83% of the 127 Georgia stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by November 13 in half of years, as early as October 31 one year in ten, and holds off past December 3 one year in ten. A hard freeze of 28°F follows 16 days later, around November 29; in spring the one-in-ten date for 28°F is March 25, 16 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 268 days one year in ten and falls short of 211 one year in ten. On average 52 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 15 days longer, to about April 4, and return around November 1. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 57%.

July is the warmest month at Experiment, GA, averaging 90°F by day and 69°F at night; January is the coldest at 56°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 79% of years and April still brings one in 24% of years.

Warmth for growing adds up to 5,284 growing degree days a year (base 50°F), fewer than at 57% of the 127 Georgia stations. 40% of them (2,126) have built up by the end of June, and July adds the most, 911. Precipitation totals 54.2 inches a year, most in January (5.3") and least in October (3.3"); May to September bring 43% of it.

The nearest other station, The Rock Rch, GA, 16 miles southeast of Concord, has a last frost 2 days earlier (March 18), a first frost 1 day later (November 14).

Measurable snow is rare here: only 2 of 23 winters from 1991 to 2020 recorded 0.1 inch or more at Woodbury, GA, 12.3 miles away, so there is no typical first-snow date to plan around.

ZIP 30206 is 15 miles from Experiment, GA, which stands at 934 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 30223 (Griffin). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30206 in zone 8b, the band where the coldest night of the year averaged 15 to 20°F (-9.4 to -6.7°C) over 1991–2020; a zone describes winter lows, not frost dates.