Frost Dates for 39577 — Wiggins, Mississippi

Half of springs at Wiggins, MS see their last 32°F night by March 14; only one in ten is past it by February 21, and one in ten still has one after April 2. Planting tender crops after March 23 leaves a 30% risk of a frost on them, after March 27 20%, and after April 2 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 18 in half of years, as early as November 1 one year in ten, and holds off past December 9 one year in ten. A hard freeze of 28°F follows 15 days later, around December 3; in spring the one-in-ten date for 28°F is March 20, 13 days before the 32°F one. The freeze-free season lasts 249 days in a typical year, longer than at 74% of the 96 Mississippi stations; it reaches 282 days one year in ten and falls short of 222 one year in ten. On average 43 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 7. Nights of 24°F, cold enough to damage hardier plants, come in 94% of winters and 16°F in 37%.

July is the warmest month at Wiggins, MS, averaging 92°F by day and 70°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 October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 73% of years and April still brings one in 13% of years.

Warmth for growing adds up to 6,228 growing degree days a year (base 50°F), more than at 73% of the 96 Mississippi stations. 42% of them (2,586) have built up by the end of June, and July adds the most, 958.

The nearest other station, Poplarville Exp Stn, MS, 23 miles west of Wiggins and 153 feet higher, has a last frost 4 days earlier (March 10), a first frost 3 days later (November 21), a season 8 days longer.

Measurable snow is rare here: only 0 of 19 winters from 1991 to 2020 recorded 0.1 inch or more at Wiggins, MS, 6 miles away, so there is no typical first-snow date to plan around.

ZIP 39577 is 6 miles from Wiggins, MS, which stands at 160 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 39577 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.