Frost Dates for 70554 — Mamou, Louisiana

Half of springs at Eunice, LA see their last 32°F night by February 26; only one in ten is past it by January 30, and one in ten still has one after March 17. Planting tender crops after March 4 leaves a 30% risk of a frost on them, after March 10 20%, and after March 17 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 27 in half of years, as early as November 8 one year in ten, and holds off past December 22 one year in ten. A hard freeze of 28°F follows 20 days later, around December 17; in spring the one-in-ten date for 28°F is March 6, 11 days before the 32°F one. The freeze-free season lasts 276 days in a typical year, longer than at 65% of the 88 Louisiana stations; it reaches 308 days one year in ten and falls short of 247 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 13 days longer, to about March 11, and return around November 14. Nights of 24°F, cold enough to damage hardier plants, come in 70% of winters and 16°F in 7%.

August is the warmest month at Eunice, LA, averaging 93°F by day and 73°F at night; January is the coldest at 60°F and 40°F. A freezing night is all but certain in 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 76% of years and March still brings one in 39% of years.

Warmth for growing adds up to 6,796 growing degree days a year (base 50°F), more than at 64% of the 88 Louisiana stations. 42% of them (2,869) have built up by the end of June, and August adds the most, 1,020. Precipitation totals 57.8 inches a year, most in January (6.4") and least in March (3.9"); May to September bring 42% of it.

The nearest other station, Oberlin Fire Twr, LA, 21 miles west of Mamou, has a last frost 3 days later (March 1), a first frost 3 days earlier (November 24), a season 9 days shorter.

Measurable snow is rare here: only 1 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Eunice, LA, 9.6 miles away, so there is no typical first-snow date to plan around.

ZIP 70554 is 10 miles from Eunice, LA, which stands at 50 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 70586 (Ville Platte). The 2023 USDA Plant Hardiness Zone Map lists ZIP 70554 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.