Frost Dates for 39191 — Wesson, Mississippi

Half of springs at Hazlehurst 5 SW, MS see their last 32°F night by March 14; only one in ten is past it by February 23, and one in ten still has one after April 4. Planting tender crops after March 23 leaves a 30% risk of a frost on them, after March 28 20%, and after April 4 10%. The 21 days between the even-odds date and the one-in-ten date is wider than at 73% of the 96 Mississippi stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by November 13 in half of years, as early as November 1 one year in ten, and holds off past December 3 one year in ten. A hard freeze of 28°F follows 14 days later, around November 27; in spring the one-in-ten date for 28°F is March 19, 16 days before the 32°F one. The freeze-free season lasts 245 days in a typical year, longer than at 64% of the 96 Mississippi stations; it reaches 273 days one year in ten and falls short of 219 one year in ten. On average 33 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 March 29, and return around November 3. Nights of 24°F, cold enough to damage hardier plants, come in 96% of winters and 16°F in 41%.

July is the warmest month at Hazlehurst 5 SW, MS, averaging 90°F by day and 71°F at night; January is the coldest at 58°F and 39°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 80% of years and April still brings one in 15% of years.

Warmth for growing adds up to 6,184 growing degree days a year (base 50°F), more than at 69% of the 96 Mississippi stations. 42% of them (2,591) have built up by the end of June, and July adds the most, 956. Precipitation totals 61.7 inches a year, most in January (6.2") and least in September (3.8"); May to September bring 39% of it.

The nearest other station, Brookhaven City, MS, 12 miles south of Wesson and 165 feet lower, has a last frost 3 days later (March 17), a first frost 1 day earlier (November 12), a season 3 days shorter.

Measurable snow is rare here: only 2 of 28 winters from 1991 to 2020 recorded 0.1 inch or more at Hazlehurst 5 SW, MS, 8.8 miles away, so there is no typical first-snow date to plan around.

ZIP 39191 is 9 miles from Hazlehurst 5 SW, MS, which stands at 600 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 39083 (Hazlehurst). The 2023 USDA Plant Hardiness Zone Map lists ZIP 39191 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.