Frost Dates for 39180 — Vicksburg, Mississippi

Half of springs at Vicksburg City, MS see their last 32°F night by February 26; only one in ten is past it by January 31, and one in ten still has one after March 16. Planting tender crops after March 5 leaves a 30% risk of a frost on them, after March 9 20%, and after March 16 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 22 in half of years, as early as November 3 one year in ten, and holds off past December 15 one year in ten. A hard freeze of 28°F follows 12 days later, around December 4; in spring the one-in-ten date for 28°F is March 6, 10 days before the 32°F one. The freeze-free season lasts 269 days in a typical year, longer than at 95% of the 96 Mississippi stations; it reaches 303 days one year in ten and falls short of 243 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 11 days longer, to about March 9, and return around November 9. Nights of 24°F, cold enough to damage hardier plants, come in 84% of winters and 16°F in 18%.

July is the warmest month at Vicksburg City, MS, averaging 92°F by day and 74°F at night; January is the coldest at 57°F and 38°F. A freezing night is all but certain in every month from December to January (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 82% of years and March still brings one in 41% of years.

Warmth for growing adds up to 6,471 growing degree days a year (base 50°F), more than at 91% of the 96 Mississippi stations. 42% of them (2,720) have built up by the end of June, and July adds the most, 1,015. Precipitation totals 61.8 inches a year, most in January (6.4") and least in August (3.6"); May to September bring 37% of it.

The nearest other station, Tallulah, LA, 20 miles west of Vicksburg, has a last frost 4 days later (March 2), a first frost 2 days later (November 24), a season 2 days longer.

Measurable snow is rare here: only 2 of 15 winters from 1991 to 2020 recorded 0.1 inch or more at Vicksburg City, MS, 6.4 miles away, so there is no typical first-snow date to plan around.

ZIP 39180 is 6 miles from Vicksburg City, MS, which stands at 80 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 39180 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.