Frost Dates for 30442 — Millen, Georgia

Half of springs at Midville Exp Stn, GA see their last 32°F night by March 18; only one in ten is past it by February 27, and one in ten still has one after April 4. Planting tender crops after March 26 leaves a 30% risk of a frost on them, after March 30 20%, and after April 4 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 11 in half of years, as early as October 28 one year in ten, and holds off past December 1 one year in ten. A hard freeze of 28°F follows 15 days later, around November 26; in spring the one-in-ten date for 28°F is March 24, 11 days before the 32°F one. The freeze-free season lasts 237 days in a typical year, longer than at 53% of the 127 Georgia stations; it reaches 263 days one year in ten and falls short of 215 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 14 days longer, to about April 1, and return around November 1. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 47%.

July is the warmest month at Midville Exp Stn, GA, averaging 92°F by day and 70°F at night; January is the coldest at 57°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 84% of years and April still brings one in 16% of years.

Warmth for growing adds up to 5,681 growing degree days a year (base 50°F), more than at 56% of the 127 Georgia stations. 41% of them (2,302) have built up by the end of June, and July adds the most, 964. Precipitation totals 45.8 inches a year, most in August (4.8") and least in October (2.8"); May to September bring 44% of it.

The nearest other station, Rocky Ford 4SE, GA, 17 miles southeast of Millen, has a last frost 4 days earlier (March 14), a first frost 4 days later (November 15), a season 11 days longer.

Measurable snow is rare here: only 0 of 25 winters from 1991 to 2020 recorded 0.1 inch or more at Midville Exp Stn, GA, 14.4 miles away, so there is no typical first-snow date to plan around.

ZIP 30442 is 14 miles from Midville Exp Stn, GA, which stands at 280 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 30442 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.