Frost Dates for 38611 — Byhalia, Mississippi

Half of springs at Olive Branch, MS see their last 32°F night by March 26; only one in ten is past it by March 5, and one in ten still has one after April 11. Planting tender crops after April 2 leaves a 30% risk of a frost on them, after April 5 20%, and after April 11 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 86% of the 96 Mississippi stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 6 in half of years, as early as October 25 one year in ten, and holds off past November 23 one year in ten. A hard freeze of 28°F follows 11 days later, around November 17; in spring the one-in-ten date for 28°F is April 2, 9 days before the 32°F one. The freeze-free season lasts 227 days in a typical year, shorter than at 74% of the 96 Mississippi stations; it reaches 252 days one year in ten and falls short of 203 one year in ten. On average 72 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 11 days longer, to about April 6, and return around October 30. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 82%.

July is the warmest month at Olive Branch, MS, averaging 91°F by day and 72°F at night; January is the coldest at 50°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 34% of years.

Warmth for growing adds up to 5,344 growing degree days a year (base 50°F), fewer than at 79% of the 96 Mississippi stations. 39% of them (2,110) have built up by the end of June, and July adds the most, 975. Precipitation totals 59.2 inches a year, most in March (6.1") and least in August (3.6"); May to September bring 38% of it.

The nearest other station, Holly Springs 4 N, MS, 14 miles east of Byhalia, has a last frost 11 days later (April 6), a first frost 9 days earlier (October 28), a season 21 days shorter.

The first measurable snow (0.1 inch or more) in Byhalia usually arrives around January 28, and the last of the season around February 7. Those are the middle dates across the winters of 1991–2020 at Germantown 4SE, TN, 15.2 miles away: half of years saw snow earlier, half later. Snow fell in 95% of those winters. The last 32°F night of spring typically comes 47 days after the last snow.

ZIP 38611 is 11 miles from Olive Branch, MS, which stands at 385 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 38654 (Olive Branch). The 2023 USDA Plant Hardiness Zone Map lists ZIP 38611 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.