Frost Dates for 31313 — Hinesville, Georgia

Half of springs at Fort Stewart, GA see their last 32°F night by March 5; only one in ten is past it by February 6, and one in ten still has one after March 26. Planting tender crops after March 14 leaves a 30% risk of a frost on them, after March 19 20%, and after March 26 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 29 in half of years, as early as November 11 one year in ten, and holds off past December 26 one year in ten. A hard freeze of 28°F follows 18 days later, around December 17; in spring the one-in-ten date for 28°F is March 13, 13 days before the 32°F one. The freeze-free season lasts 269 days in a typical year, longer than at 93% of the 127 Georgia stations; it reaches 301 days one year in ten and falls short of 240 one year in ten. On average 21 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 March 19, and return around November 15. Nights of 24°F, cold enough to damage hardier plants, come in 78% of winters and 16°F in 9%.

July is the warmest month at Fort Stewart, GA, averaging 92°F by day and 73°F at night; January is the coldest at 63°F and 41°F. A freezing night is all but certain in January (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 86% of years and March still brings one in 59% of years.

Warmth for growing adds up to 6,744 growing degree days a year (base 50°F), more than at 95% of the 127 Georgia stations. 42% of them (2,840) have built up by the end of June, and July adds the most, 1,000. Precipitation totals 51.0 inches a year, most in June (6.7") and least in November (2.6"); May to September bring 51% of it.

The nearest other station, Glennville 3NW, GA, 23 miles northwest of Hinesville, has a last frost 4 days later (March 9), a first frost 5 days earlier (November 24), a season 11 days shorter.

Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Fort Stewart, GA, 2.9 miles away, so there is no typical first-snow date to plan around.

ZIP 31313 is 3 miles from Fort Stewart, GA, which stands at 92 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 5 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 31313 in zone 9a, the band where the coldest night of the year averaged 20 to 25°F (-6.7 to -3.9°C) over 1991–2020; a zone describes winter lows, not frost dates.