Frost Dates: First and last frost dates for new roads, 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 April 5. 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 27, so we don't dare plant that early. We wait a few days and by March 14 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° Jan 14 -- -- -- -- -- -- -- --
Last 20° Jan 24 Jan 13 Jan 2 Dec 17 -- -- -- -- --
Last 24° Feb 23 Feb 12 Feb 4 Jan 28 Jan 19 Jan 9 -- -- --
Last 28° Mar 10 Feb 27 Feb 20 Feb 14 Feb 8 Feb 2 Jan 26 Jan 19 Jan 9
Last 32° Mar 20 Mar 13 Mar 8 Mar 3 Feb 27 Feb 23 Feb 19 Feb 13 Feb 6
Last 36° Apr 5 Mar 29 Mar 23 Mar 18 Mar 14 Mar 10 Mar 5 Feb 27 Feb 20

How to read these charts for the fall
As your growing season comes to an end, the nightly temperatures for new roads, 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 3, and by December 8 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 10.
  2. There is a 50% chance of being hit by a 32° frost starting around November 24
  3. You have a 80% chance of seeing 32° by December 8
  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° Jan 10 -- -- -- -- -- -- -- --
First 20° Dec 25 Jan 5 Jan 15 Jan 31 -- -- -- -- --
First 24° Dec 6 Dec 17 Dec 25 Jan 1 Jan 9 Jan 19 -- -- --
First 28° Nov 23 Nov 29 Dec 4 Dec 8 Dec 11 Dec 15 Dec 18 Dec 23 Dec 29
First 32° Nov 3 Nov 10 Nov 15 Nov 20 Nov 24 Nov 28 Dec 3 Dec 8 Dec 15
First 36° Oct 27 Nov 3 Nov 7 Nov 11 Nov 15 Nov 19 Nov 23 Nov 28 Dec 4

Frost Dates for other nearby locations
  • Baton Rouge Metro, LA
  • Lsu Ben-hur Farm, LA
  • Woodville, MS
  • Carville, LA
  • Grand Coteau, LA
  • Liberty, MS
  • Lafayette Fcwos, LA
  • Donaldsonville, LA
  • Bunkie, LA
  • Jeanerette, LA

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