Frost Dates for 38646 — Marks, Mississippi

Half of springs at Lambert 1W, MS see their last 32°F night by March 17; 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 26 leaves a 30% risk of a frost on them, after March 31 20%, and after April 5 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 7 in half of years, as early as October 22 one year in ten, and holds off past November 27 one year in ten. A hard freeze of 28°F follows 13 days later, around November 20; 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 233 days in a typical year, shorter than at 63% of the 96 Mississippi stations; it reaches 258 days one year in ten and falls short of 206 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 15 days longer, to about April 1, and return around October 28. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 64%.

July is the warmest month at Lambert 1W, MS, averaging 92°F by day and 71°F at night; January is the coldest at 50°F and 32°F. A freezing night is all but certain in every month from November 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 18% of years.

Warmth for growing adds up to 5,534 growing degree days a year (base 50°F), fewer than at 69% of the 96 Mississippi stations. 40% of them (2,208) have built up by the end of June, and July adds the most, 981. Precipitation totals 56.7 inches a year, most in April (6.1") and least in July (3.0"); May to September bring 34% of it.

The nearest other station, Clarksdale, MS, 17 miles west of Marks, has a last frost 1 day earlier (March 16), a first frost 5 days later (November 12), a season 10 days longer.

Measurable snow is rare here: only 3 of 23 winters from 1991 to 2020 recorded 0.1 inch or more at Lambert 1W, MS, 4.1 miles away, so there is no typical first-snow date to plan around.

ZIP 38646 is 4 miles from Lambert 1W, MS, which stands at 155 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 38963 (Tutwiler). The 2023 USDA Plant Hardiness Zone Map lists ZIP 38646 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.