Frost Dates for 39160 — Sallis, Mississippi

Half of springs at Kosciusko, MS see their last 32°F night by March 18; only one in ten is past it by February 28, and one in ten still has one after April 5. Planting tender crops after March 27 leaves a 30% risk of a frost on them, after March 31 20%, and after April 5 10%. The 18 days between the even-odds date and the one-in-ten date is narrower than at 53% of the 96 Mississippi stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 11 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 13 days later, around November 24; in spring the one-in-ten date for 28°F is March 24, 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 263 days one year in ten and falls short of 214 one year in ten. On average 59 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 100% of winters and 16°F in 61%.

July is the warmest month at Kosciusko, MS, averaging 90°F by day and 71°F at night; January is the coldest at 54°F and 33°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 85% of years and April still brings one in 17% of years.

Warmth for growing adds up to 5,451 growing degree days a year (base 50°F), fewer than at 75% of the 96 Mississippi stations. 40% of them (2,199) have built up by the end of June, and July adds the most, 944. Precipitation totals 62.7 inches a year, most in April (6.8") and least in August (3.7"); May to September bring 37% of it.

The nearest other station, Pickens, MS, 15 miles southwest of Sallis and 172 feet lower, has a last frost 4 days earlier (March 14), a first frost 3 days earlier (November 8).

Measurable snow is rare here: only 11 of 27 winters from 1991 to 2020 recorded 0.1 inch or more at Kosciusko, MS, 10.7 miles away, so there is no typical first-snow date to plan around.

ZIP 39160 is 11 miles from Kosciusko, MS, which stands at 410 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 39090 (Kosciusko). The 2023 USDA Plant Hardiness Zone Map lists ZIP 39160 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.