Frost Dates for 71343 — Jonesville, Louisiana

Half of springs at Jonesville Locks, LA see their last 32°F night by March 6; only one in ten is past it by February 9, and one in ten still has one after March 25. Planting tender crops after March 15 leaves a 30% risk of a frost on them, after March 19 20%, and after March 25 10%. The 19 days between the even-odds date and the one-in-ten date is narrower than at 78% of the 88 Louisiana 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 11 one year in ten. A hard freeze of 28°F follows 13 days later, around December 5; in spring the one-in-ten date for 28°F is March 16, 9 days before the 32°F one. The freeze-free season lasts 261 days in a typical year, shorter than at 63% of the 88 Louisiana stations; it reaches 291 days one year in ten and falls short of 234 one year in ten. On average 27 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 13 days longer, to about March 19, and return around November 10. Nights of 24°F, cold enough to damage hardier plants, come in 87% of winters and 16°F in 16%.

July is the warmest month at Jonesville Locks, LA, averaging 90°F by day and 72°F at night; January is the coldest at 57°F and 37°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 84% of years and March still brings one in 64% of years.

Warmth for growing adds up to 6,063 growing degree days a year (base 50°F), fewer than at 84% of the 88 Louisiana stations. 41% of them (2,482) have built up by the end of June, and July adds the most, 967. Precipitation totals 59.6 inches a year, most in January (6.5") and least in August (3.5"); May to September bring 36% of it.

The nearest other station, Jena, LA, 17 miles west of Jonesville, has a last frost 13 days later (March 19), a first frost 10 days earlier (November 12), a season 23 days shorter.

Measurable snow is rare here: only 3 of 27 winters from 1991 to 2020 recorded 0.1 inch or more at Jonesville Locks, LA, 7.2 miles away, so there is no typical first-snow date to plan around.

ZIP 71343 is 7 miles from Jonesville Locks, LA, which stands at 70 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 71343 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.