Frost Dates for 70783 — Ventress, Louisiana

Half of springs at New Roads 5 NE, LA see their last 32°F night by February 19; only one in ten is past it by January 21, and one in ten still has one after March 14. Planting tender crops after March 1 leaves a 30% risk of a frost on them, after March 7 20%, and after March 14 10%. The 23 days between the even-odds date and the one-in-ten date is wider than at 52% of the 88 Louisiana stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by December 5 in half of years, as early as November 15 one year in ten, and holds off past January 4 one year in ten. A hard freeze of 28°F follows 24 days later, around December 29; in spring the one-in-ten date for 28°F is March 2, 12 days before the 32°F one. The freeze-free season lasts 292 days in a typical year, longer than at 73% of the 88 Louisiana stations; it reaches 333 days one year in ten and falls short of 259 one year in ten. On average 19 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 6, and return around November 22. Nights of 24°F, cold enough to damage hardier plants, come in 53% of winters and 16°F in 0%.

July is the warmest month at New Roads 5 NE, LA, averaging 92°F by day and 75°F at night; January is the coldest at 61°F and 42°F. From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 65% of years and March still brings one in 32% of years.

Warmth for growing adds up to 7,127 growing degree days a year (base 50°F), more than at 82% of the 88 Louisiana stations. 42% of them (3,014) have built up by the end of June, and July adds the most, 1,048. Precipitation totals 58.6 inches a year, most in January (6.5") and least in November (3.9"); May to September bring 41% of it.

The nearest other station, St Francisville 1 NE, LA, 8 miles north of Ventress, has a last frost 11 days later (March 2), a first frost 11 days earlier (November 24), a season 24 days shorter.

Measurable snow is rare here: only 1 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at New Roads 5 NE, LA, 3.7 miles away, so there is no typical first-snow date to plan around.

ZIP 70783 is 4 miles from New Roads 5 NE, LA, which stands at 45 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 70760 (New Roads). The 2023 USDA Plant Hardiness Zone Map lists ZIP 70783 in zone 9a, the band where the coldest night of the year averaged 20 to 25°F (-6.7 to -3.9°C) over 1991–2020; a zone describes winter lows, not frost dates.