Frost Dates for 30560 — Morganton, Georgia

Half of springs at Blairsville Exp Stn, GA see their last 32°F night by April 26; only one in ten is past it by April 8, and one in ten still has one after May 11. Planting tender crops after May 2 leaves a 30% risk of a frost on them, after May 6 20%, and after May 11 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 83% of the 127 Georgia stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 19 in half of years, as early as October 7 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 9 days later, around October 28; in spring the one-in-ten date for 28°F is May 1, 10 days before the 32°F one. The freeze-free season lasts 176 days in a typical year, the shortest of the 127 Georgia stations; it reaches 198 days one year in ten and falls short of 155 one year in ten. On average 104 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 10 days longer, to about May 6, and return around October 11. Severe cold of 16°F or below comes every winter, usually between December 5 and February 25.

July is the warmest month at Blairsville Exp Stn, GA, averaging 85°F by day and 62°F at night; January is the coldest at 49°F and 25°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 37% of years.

Warmth for growing adds up to 3,577 growing degree days a year (base 50°F), fewer than at 98% of the 127 Georgia stations. 37% of them (1,311) have built up by the end of June, and July adds the most, 727. Precipitation totals 60.6 inches a year, most in January (5.9") and least in October (4.2"); May to September bring 41% of it.

The nearest other station, Murphy 4ESE, NC, 19 miles northeast of Morganton and 349 feet lower, has a last frost 4 days earlier (April 22), a first frost 1 day later (October 20), a season 4 days longer.

Measurable snow is rare here: only 8 of 24 winters from 1991 to 2020 recorded 0.1 inch or more at Blairsville Exp Stn, GA, 15.2 miles away, so there is no typical first-snow date to plan around.

ZIP 30560 is 15 miles from Blairsville Exp Stn, GA, which stands at 1,949 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 30512 (Blairsville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30560 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.