Frost Dates: First and last frost dates for New Iberia Acadiana, LA

How to read these charts for the spring
As the growing season approaches, the days get longer, the weather begins to warm up, and the nights start being less cold. You're still getting frost, but the chance of nightly frosts gets less and less with each passing day. Eventually, the frost stops, and this is when your tender plants are fully safe. So, how do you plan for this? The probabilities on this page help you assess your risk of frost on any given day.

What's a safe temperature for tender plants? When the nightly temperature falls, frost can form, even above 32°, because the air is colder high above the ground and the frost can form up there and then fall down onto your garden and do some damage, even if it's 36° on the ground. So many factors come into play, including wind, concrete, houses, trees and other structures, etc etc etc. Because of all this, you might want to consider 36° as "the danger zone".

In your average springtime, you have a 90% chance that there will be no 36° nights by March 29. In other words, you can pretty much count on being safe from frost by that day. But we want to get those tomatoes in the ground as soon as possible, right? We see that there's still an 80% chance of 36° on February 20, so we don't dare plant that early. We wait a few days and by March 7 we are at the 50/50 point. At this point, we are close and we can start watching the weather forecast. If the upcoming week's forecast doesn't show below 40°, then it's probably okay to risk planting out your plants.

In the Spring
Temperature 10% 20% 30% 40% 50% 60% 70% 80% 90%
Last 16° -- -- -- -- -- -- -- -- --
Last 20° Jan 27 Jan 5 -- -- -- -- -- -- --
Last 24° Feb 10 Jan 28 Jan 18 Jan 7 Dec 23 -- -- -- --
Last 28° Mar 4 Feb 22 Feb 14 Feb 7 Feb 1 Jan 25 Jan 17 Jan 6 --
Last 32° Mar 21 Mar 10 Mar 2 Feb 24 Feb 17 Feb 11 Feb 5 Jan 28 Jan 17
Last 36° Mar 29 Mar 21 Mar 16 Mar 11 Mar 7 Mar 2 Feb 26 Feb 20 Feb 13

How to read these charts for the fall
As your growing season comes to an end, the nightly temperatures for New Iberia Acadiana, LA start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around November 9, and by December 20 you're almost certain to have received at least one frost event.

The charts on this page show the probabilities of receiving a certain temperature on a certain day. Some examples that might help:

  1. You have a small 20% chance of getting 32° by November 18.
  2. There is a 50% chance of being hit by a 32° frost starting around December 4
  3. You have a 80% chance of seeing 32° by December 20
  4. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night.
In the Fall
Temperature 10% 20% 30% 40% 50% 60% 70% 80% 90%
First 16° -- -- -- -- -- -- -- -- --
First 20° Jan 8 Feb 1 -- -- -- -- -- -- --
First 24° Dec 13 Dec 23 Jan 1 Jan 10 Jan 22 -- -- -- --
First 28° Nov 22 Dec 3 Dec 12 Dec 20 Dec 27 Jan 4 Jan 12 Jan 24 --
First 32° Nov 9 Nov 18 Nov 24 Nov 29 Dec 4 Dec 9 Dec 14 Dec 20 Dec 28
First 36° Oct 31 Nov 6 Nov 10 Nov 13 Nov 17 Nov 20 Nov 23 Nov 28 Dec 3

Frost Dates for other nearby locations
  • Jeanerette, LA
  • Lafayette Fcwos, LA
  • Franklin, LA
  • Grand Coteau, LA
  • Crowley, LA
  • Morgan City, LA
  • Carville, LA
  • Lsu Ben-hur Farm, LA
  • Donaldsonville, LA
  • New Roads, LA

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    • Data is provided by the NOAA National Centers for Environmental Information.