When is the last frost in Thibodaux, LA?

For ZIP code 70302, the average last spring frost (32°F) is February 5, based on NOAA 1991-2020 climate normals for the Thibodaux 4 Se, LA weather station. There is a 1-in-10 chance of a frost after March 7.

When is the first frost in Thibodaux, LA?

The average first fall frost (32°F) is December 14. There is a 1-in-10 chance of frost by November 19, so tender plants are at risk from that point on.

How long is the growing season in 70302?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 311 days long.

Are these frost dates a forecast?

No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.

Frost dates for 70302Thibodaux, LA

The average last spring frost in Thibodaux is February 5 and the average first fall frost is December 14, giving a typical growing season of about 311 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Feb 5
Average first fall frost: Dec 14
Growing season: 311 days

Frost risk by date

NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.

Spring dates: chance of a frost AFTER the date. Fall dates: chance of a frost BEFORE the date.
Temperature	Last spring: 90% / 50% / 10% chance	First fall: 10% / 50% / 90% chance	Growing season (50%)	Years with at least one
Light frost (36°F)	Jan 30 · Feb 27 · Mar 21	Nov 7 · Nov 29 · Dec 23	277 days	100%
Frost / freeze (32°F)	Jan 3 · Feb 5 · Mar 7	Nov 19 · Dec 14 · Jan 15	311 days	96%
Hard freeze (28°F)	Dec 24 · Jan 23 · Feb 21	Dec 4 · Jan 1 · Feb 1	346 days	75%

Where these dates come from

ZIP code 70302 is matched to the NOAA station Thibodaux 4 Se, LA, 6.5 km away, at 15 ft elevation (2 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Thibodaux 4 Se, LA (used)	15 ft	Feb 5	Dec 14
Houma, LA	8 ft	Feb 5	Dec 17
Morgan City, LA	5 ft	Jan 30	Jan 1
Donaldsonville 4 Sw, LA	30 ft	Feb 21	Dec 5

Frost dates near Thibodaux

Thibodaux, LA 70310 · last Feb 5, first Dec 14
Schriever, LA 70395 · last Feb 5, first Dec 14
Gray, LA 70359 · last Feb 5, first Dec 14
Labadieville, LA 70372 · last Feb 5, first Dec 14
Donner, LA 70352 · last Feb 5, first Dec 14
Houma, LA 70364 · last Feb 5, first Dec 14
Gibson, LA 70356 · last Jan 30, first Jan 1
Vacherie, LA 70090 · last Feb 9, first Dec 14

Frequently asked questions

When is the last frost in Thibodaux, LA?: For ZIP code 70302, the average last spring frost (32°F) is February 5, based on NOAA 1991-2020 climate normals for the Thibodaux 4 Se, LA weather station. There is a 1-in-10 chance of a frost after March 7.
When is the first frost in Thibodaux, LA?: The average first fall frost (32°F) is December 14. There is a 1-in-10 chance of frost by November 19, so tender plants are at risk from that point on.
How long is the growing season in 70302?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 311 days long.
Are these frost dates a forecast?: No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.