When is the last frost in Destrehan, LA?

For ZIP code 70047, the average last spring frost (32°F) is January 30, based on NOAA 1991-2020 climate normals for the New Orleans Intl Ap, LA weather station. There is a 1-in-10 chance of a frost after February 27.

When is the first frost in Destrehan, LA?

The average first fall frost (32°F) is December 31. There is a 1-in-10 chance of frost by December 1, so tender plants are at risk from that point on.

How long is the growing season in 70047?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 333 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 70047Destrehan, LA

The average last spring frost in Destrehan is January 30 and the average first fall frost is December 31, giving a typical growing season of about 333 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 30
Average first fall frost: Dec 31
Growing season: 333 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 20 · Feb 16 · Mar 12	Nov 16 · Dec 9 · Jan 8	297 days	99%
Frost / freeze (32°F)	Dec 29 · Jan 30 · Feb 27	Dec 1 · Dec 31 · Jan 31	333 days	87%
Hard freeze (28°F)	Dec 24 · Jan 20 · Feb 14	Dec 11 · Jan 7 · Feb 6	365 days	50%

Where these dates come from

ZIP code 70047 is matched to the NOAA station New Orleans Intl Ap, LA, 11.7 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
New Orleans Intl Ap, LA (used)	4 ft	Jan 30	Dec 31
Reserve, LA	15 ft	Feb 9	Dec 14
New Orleans Audubon, LA	20 ft	Jan 24	Jan 2
Marrero 9 Ssw, LA	3 ft	Feb 10	Dec 12

Frost dates near Destrehan

New Sarpy, LA 70078 · last Jan 30, first Dec 31
Hahnville, LA 70057 · last Jan 30, first Dec 31
Luling, LA 70070 · last Jan 30, first Dec 31
Saint Rose, LA 70087 · last Jan 30, first Dec 31
Norco, LA 70079 · last Feb 9, first Dec 14
Ama, LA 70031 · last Jan 30, first Dec 31
Boutte, LA 70039 · last Jan 30, first Dec 31
Kenner, LA 70097 · last Jan 30, first Dec 31

Frequently asked questions

When is the last frost in Destrehan, LA?: For ZIP code 70047, the average last spring frost (32°F) is January 30, based on NOAA 1991-2020 climate normals for the New Orleans Intl Ap, LA weather station. There is a 1-in-10 chance of a frost after February 27.
When is the first frost in Destrehan, LA?: The average first fall frost (32°F) is December 31. There is a 1-in-10 chance of frost by December 1, so tender plants are at risk from that point on.
How long is the growing season in 70047?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 333 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.