Frost Dates for 36079 — Troy, Alabama

Half of springs at Troy 2 W, AL see their last 32°F night by March 17; only one in ten is past it by February 25, and one in ten still has one after April 3. Planting tender crops after March 25 leaves a 30% risk of a frost on them, after March 29 20%, and after April 3 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 November 16 in half of years, as early as November 1 one year in ten, and holds off past December 4 one year in ten. A hard freeze of 28°F follows 13 days later, around November 29; in spring the one-in-ten date for 28°F is March 24, 10 days before the 32°F one. The freeze-free season lasts 242 days in a typical year, longer than at 69% of the 115 Alabama stations; it reaches 270 days one year in ten and falls short of 218 one year in ten. On average 40 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 15 days longer, to about April 1, and return around November 4. Nights of 24°F, cold enough to damage hardier plants, come in 97% of winters and 16°F in 36%.

July is the warmest month at Troy 2 W, AL, averaging 90°F by day and 69°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 May to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 82% of years and April still brings one in 14% of years.

Warmth for growing adds up to 5,771 growing degree days a year (base 50°F), more than at 63% of the 115 Alabama stations. 41% of them (2,385) have built up by the end of June, and July adds the most, 913.

The nearest other station, Troy, AL, 2 miles northeast of Troy, has a last frost 7 days earlier (March 10), a first frost 5 days later (November 21), a season 15 days longer.

Measurable snow is rare here: only 2 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Troy, AL, 2.2 miles away, so there is no typical first-snow date to plan around.

ZIP 36079 is under a mile from Troy 2 W, AL, which stands at 472 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 36079 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.