Frost dates / Louisiana / New Orleans

Frost dates in New Orleans, LA

The station on this page is NEW ORLEANS LAKEFRONT AP, LA US (USW00053917), 5.7 miles from the city point. Population in the Census 2024 estimate is 362,701.

Zone 9bUSDA average annual extreme minimum 25°F to 30°F, from ZIP 70128 (1.2 miles from the city point used on this page).

Median last 32°F is January 22. Median first 32°F is January 5. The 50% growing-season length is 348 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Last 32°F in spring

NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.

Probability	Date	How to read it
90%	December 28	Earlier date. A last 32°F on or after this day is common.
50%	January 22	Median.
10%	February 23	Later date. A last 32°F on or after this day is uncommon.

First 32°F in fall

NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.

Probability	Date	How to read it
10%	December 13	Earlier date. A first 32°F on or before this day is uncommon.
50%	January 5	Median.
90%	February 1	Later date. A first 32°F on or before this day is common.

32°F growing-season length

Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.

Probability the season is at least this long	Days
10%	365
50%	348
90%	310

28°F threshold

	10%	50%	90%
Last, on or after	February 11	January 18	December 26
First, on or before	December 23	January 11	February 4
Season at least	365 days	365 days	339 days

36°F threshold

	10%	50%	90%
Last, on or after	March 7	February 4	January 5
First, on or before	November 30	December 26	January 19
Season at least	356 days	321 days	286 days

Station NEW ORLEANS LAKEFRONT AP, LA US (USW00053917). Completeness flag R, 21 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 71.3%. Freeze dates are conditional on that threshold occurring. Elevation 2.7 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

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New Orleans, LA

Zone 9bAverage annual extreme minimum 25°F to 30°F

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Louisiana. Nearest qualified station: NEW ORLEANS LAKEFRONT AP, LA US (USW00053917), 5.7 miles. Median last 32°F January 22. Median first 32°F January 5. The 50% growing-season length is 348 days.

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32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	February 23	January 22	December 28
First 32°F on or before	December 13	January 5	February 1

Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.

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Planting calendar

Frost dates for Louisiana are above. Planting windows appear for states with a cited extension guide. The fall and seed tools use the numbers you enter and the station dates.

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