Frost Dates for 30238 — Jonesboro, Georgia

Half of springs at Jonesboro, GA see their last 32°F night by March 25; only one in ten is past it by March 2, and one in ten still has one after April 10. Planting tender crops after March 31 leaves a 30% risk of a frost on them, after April 4 20%, and after April 10 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 70% of the 127 Georgia stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 12 in half of years, as early as October 31 one year in ten, and holds off past December 2 one year in ten. A hard freeze of 28°F follows 16 days later, around November 28; in spring the one-in-ten date for 28°F is March 29, 12 days before the 32°F one. The freeze-free season lasts 235 days in a typical year, longer than at 50% of the 127 Georgia stations; it reaches 263 days one year in ten and falls short of 211 one year in ten. On average 49 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 6, and return around November 1. 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 Jonesboro, GA, averaging 90°F by day and 70°F at night; January is the coldest at 53°F and 32°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 87% of years and April still brings one in 29% of years.

Warmth for growing adds up to 5,105 growing degree days a year (base 50°F), fewer than at 66% of the 127 Georgia stations. 39% of them (2,015) have built up by the end of June, and July adds the most, 924. Precipitation totals 53.1 inches a year, most in July (5.1") and least in May (3.5"); May to September bring 40% of it.

The nearest other station, Atlanta Hartsfield International Airport, GA, 10 miles north of Jonesboro, has a last frost 10 days earlier (March 15), a first frost 8 days later (November 20), a season 17 days longer.

Measurable snow is rare here: only 9 of 23 winters from 1991 to 2020 recorded 0.1 inch or more at Jonesboro, GA, 3 miles away, so there is no typical first-snow date to plan around.

ZIP 30238 is 3 miles from Jonesboro, GA, which stands at 930 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 30281 (Stockbridge). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30238 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.