Frost Dates for 39842 — Dawson, Georgia

Half of springs at Leesburg 2, GA see their last 32°F night by March 12; only one in ten is past it by February 18, and one in ten still has one after March 30. Planting tender crops after March 19 leaves a 30% risk of a frost on them, after March 24 20%, and after March 30 10%. The 18 days between the even-odds date and the one-in-ten date is narrower than at 41% of the 127 Georgia stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 19 in half of years, as early as November 3 one year in ten, and holds off past December 11 one year in ten. A hard freeze of 28°F follows 15 days later, around December 4; in spring the one-in-ten date for 28°F is March 18, 12 days before the 32°F one. The freeze-free season lasts 253 days in a typical year, longer than at 73% of the 127 Georgia stations; it reaches 282 days one year in ten and falls short of 227 one year in ten. On average 37 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 March 24, and return around November 8. Nights of 24°F, cold enough to damage hardier plants, come in 93% of winters and 16°F in 22%.

July is the warmest month at Leesburg 2, GA, averaging 92°F by day and 72°F at night; January is the coldest at 59°F and 37°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 73% of years.

Warmth for growing adds up to 6,185 growing degree days a year (base 50°F), more than at 73% of the 127 Georgia stations. 41% of them (2,534) have built up by the end of June, and July adds the most, 983.

The nearest other station, Plains SW Ga Exp Stn, GA, 20 miles north of Dawson and 240 feet higher, has a last frost 3 days later (March 15), a first frost 2 days earlier (November 17), a season 4 days shorter.

Measurable snow is rare here: only 0 of 19 winters from 1991 to 2020 recorded 0.1 inch or more at Dawson, GA, 1.6 miles away, so there is no typical first-snow date to plan around.

ZIP 39842 is 15 miles from Leesburg 2, GA, which stands at 260 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 31763 (Leesburg). The 2023 USDA Plant Hardiness Zone Map lists ZIP 39842 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.