Frost Dates for 35151 — Sylacauga, Alabama

Half of springs at Sylacauga 4 NE, AL see their last 32°F night by April 2; only one in ten is past it by March 13, and one in ten still has one after April 19. Planting tender crops after April 9 leaves a 30% risk of a frost on them, after April 13 20%, and after April 19 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 64% of the 115 Alabama stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 31 in half of years, as early as October 16 one year in ten, and holds off past November 15 one year in ten. A hard freeze of 28°F follows 8 days later, around November 8; in spring the one-in-ten date for 28°F is April 8, 11 days before the 32°F one. The freeze-free season lasts 211 days in a typical year, shorter than at 83% of the 115 Alabama stations; it reaches 238 days one year in ten and falls short of 189 one year in ten. On average 73 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 14, and return around October 23. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 85%.

July is the warmest month at Sylacauga 4 NE, AL, averaging 90°F by day and 69°F at night; January is the coldest at 55°F and 31°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 57% of years.

Warmth for growing adds up to 5,108 growing degree days a year (base 50°F), fewer than at 72% of the 115 Alabama stations. 40% of them (2,028) have built up by the end of June, and July adds the most, 911. Precipitation totals 57.3 inches a year, most in February (5.9") and least in October (3.5"); May to September bring 38% of it.

The nearest other station, Childersburg Wtp, AL, 10 miles north of Sylacauga, has a last frost 2 days earlier (March 31), a first frost 2 days later (November 2), a season 5 days longer.

Measurable snow is rare here: only 6 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Sylacauga 4 NE, AL, 8.5 miles away, so there is no typical first-snow date to plan around.

ZIP 35151 is 9 miles from Sylacauga 4 NE, AL, which stands at 490 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 35150 (Sylacauga). The 2023 USDA Plant Hardiness Zone Map lists ZIP 35151 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.