Frost Dates for 36467 — Opp, Alabama

Half of springs at Andalusia Opp Airport, AL see their last 32°F night by February 28; only one in ten is past it by February 1, and one in ten still has one after March 20. Planting tender crops after March 9 leaves a 30% risk of a frost on them, after March 14 20%, and after March 20 10%. The 20 days between the even-odds date and the one-in-ten date is wider than at 70% of the 115 Alabama stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 28 in half of years, as early as November 8 one year in ten, and holds off past January 1 one year in ten. A hard freeze of 28°F follows 20 days later, around December 18; in spring the one-in-ten date for 28°F is March 10, 10 days before the 32°F one. The freeze-free season lasts 274 days in a typical year, longer than at 97% of the 115 Alabama stations; it reaches 310 days one year in ten and falls short of 245 one year in ten. On average 18 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 14, and return around November 16. Nights of 24°F, cold enough to damage hardier plants, come in 73% of winters and 16°F in 7%.

July is the warmest month at Andalusia Opp Airport, AL, averaging 94°F by day and 74°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 82% of years and March still brings one in 48% of years.

Warmth for growing adds up to 7,125 growing degree days a year (base 50°F), more than at 98% of the 115 Alabama stations. 43% of them (3,054) have built up by the end of June, and July adds the most, 1,051.

The nearest other station, Andalusia 3 W, AL, 16 miles west of Opp, has a last frost 25 days later (March 25), a first frost 19 days earlier (November 9), a season 44 days shorter.

Measurable snow is rare here: only 1 of 17 winters from 1991 to 2020 recorded 0.1 inch or more at Elba, AL, 14.9 miles away, so there is no typical first-snow date to plan around.

ZIP 36467 is 8 miles from Andalusia Opp Airport, AL, which stands at 310 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 36467 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.