Frost Dates for 39476 — Richton, Mississippi

Half of springs at Beaumont Expstation, MS see their last 32°F night by March 18; only one in ten is past it by February 25, and one in ten still has one after April 6. Planting tender crops after March 28 leaves a 30% risk of a frost on them, after April 1 20%, and after April 6 10%. The 19 days between the even-odds date and the one-in-ten date is narrower than at 38% of the 96 Mississippi stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 12 in half of years, as early as October 29 one year in ten, and holds off past December 1 one year in ten. A hard freeze of 28°F follows 14 days later, around November 26; in spring the one-in-ten date for 28°F is March 25, 12 days before the 32°F one. The freeze-free season lasts 239 days in a typical year, shorter than at 49% of the 96 Mississippi stations; it reaches 268 days one year in ten and falls short of 215 one year in ten. On average 49 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 April 1, and return around November 1. Nights of 24°F, cold enough to damage hardier plants, come in 97% of winters and 16°F in 38%.

July is the warmest month at Beaumont Expstation, MS, averaging 94°F by day and 71°F at night; January is the coldest at 62°F and 36°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to September 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 21% of years.

Warmth for growing adds up to 6,393 growing degree days a year (base 50°F), more than at 86% of the 96 Mississippi stations. 42% of them (2,655) have built up by the end of June, and July adds the most, 995. Precipitation totals 64.0 inches a year, most in December (6.2") and least in September (4.1"); May to September bring 42% of it.

The nearest other station, Hattiesburg Chain Municipal Airport, MS, 24 miles west of Richton, has a last frost 10 days earlier (March 8), a first frost 3 days later (November 15), a season 13 days longer.

Measurable snow is rare here: only 2 of 19 winters from 1991 to 2020 recorded 0.1 inch or more at Beaumont Expstation, MS, 9 miles away, so there is no typical first-snow date to plan around.

ZIP 39476 is 9 miles from Beaumont Expstation, MS, which stands at 194 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 39451 (Leakesville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 39476 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.