When is the last frost in Grand Chenier, LA?

For ZIP code 70643, the average last spring frost (32°F) is February 2, based on NOAA 1991-2020 climate normals for the Rockefeller Wl Refuge, LA weather station. There is a 1-in-10 chance of a frost after March 4.

When is the first frost in Grand Chenier, LA?

The average first fall frost (32°F) is December 23. There is a 1-in-10 chance of frost by November 29, so tender plants are at risk from that point on.

How long is the growing season in 70643?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 323 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 70643Grand Chenier, LA

The average last spring frost in Grand Chenier is February 2 and the average first fall frost is December 23, giving a typical growing season of about 323 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Feb 2
Average first fall frost: Dec 23
Growing season: 323 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 25 · Feb 22 · Mar 15	Nov 13 · Dec 3 · Jan 2	287 days	100%
Frost / freeze (32°F)	Jan 2 · Feb 2 · Mar 4	Nov 29 · Dec 23 · Jan 19	323 days	92%
Hard freeze (28°F)	Dec 21 · Jan 21 · Feb 23	Dec 9 · Jan 5 · Feb 6	355 days	63%

Where these dates come from

ZIP code 70643 is matched to the NOAA station Rockefeller Wl Refuge, LA, 11.2 km away, at 4 ft elevation (4 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Rockefeller Wl Refuge, LA (used)	4 ft	Feb 2	Dec 23
Lake Arthur 7 Sw, LA	11 ft	Feb 10	Dec 11
Hackberry 8 Ssw, LA	6 ft	Feb 3	Dec 24
Lake Charles, LA	13 ft	Feb 14	Dec 7

Frost dates near Grand Chenier

Creole, LA 70632 · last Feb 2, first Dec 23
Hayes, LA 70646 · last Feb 10, first Dec 11
Bell City, LA 70630 · last Feb 14, first Dec 7
Lake Arthur, LA 70549 · last Feb 10, first Dec 11
Lake Charles, LA 70607 · last Feb 14, first Dec 7
Gueydan, LA 70542 · last Feb 10, first Dec 11
Cameron, LA 70631 · last Feb 3, first Dec 24
Hackberry, LA 70645 · last Feb 3, first Dec 24

Frequently asked questions

When is the last frost in Grand Chenier, LA?: For ZIP code 70643, the average last spring frost (32°F) is February 2, based on NOAA 1991-2020 climate normals for the Rockefeller Wl Refuge, LA weather station. There is a 1-in-10 chance of a frost after March 4.
When is the first frost in Grand Chenier, LA?: The average first fall frost (32°F) is December 23. There is a 1-in-10 chance of frost by November 29, so tender plants are at risk from that point on.
How long is the growing season in 70643?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 323 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.