Frost Dates: First and last frost dates for Mobile Regional Ap, AL

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 3. 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 March 1, 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 Dec 25 -- -- -- -- -- -- --
Last 20° Feb 8 Jan 27 Jan 16 Jan 2 -- -- -- -- --
Last 24° Feb 28 Feb 18 Feb 10 Feb 3 Jan 28 Jan 20 Jan 11 Dec 26 --
Last 28° Mar 13 Mar 4 Feb 26 Feb 20 Feb 15 Feb 10 Feb 4 Jan 29 Jan 20
Last 32° Mar 21 Mar 14 Mar 9 Mar 4 Feb 28 Feb 24 Feb 20 Feb 15 Feb 7
Last 36° Apr 3 Mar 27 Mar 22 Mar 18 Mar 14 Mar 10 Mar 6 Mar 1 Feb 22

How to read these charts for the fall
As your growing season comes to an end, the nightly temperatures for Mobile Regional Ap, AL 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 8, and by December 12 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 15.
  2. There is a 50% chance of being hit by a 32° frost starting around November 29
  3. You have a 80% chance of seeing 32° by December 12
  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 6 Jan 26 -- -- -- -- -- -- --
First 20° Dec 22 Jan 2 Jan 12 Jan 23 -- -- -- -- --
First 24° Dec 5 Dec 18 Dec 28 Jan 5 Jan 13 Jan 22 Feb 3 Feb 23 --
First 28° Nov 18 Nov 27 Dec 4 Dec 10 Dec 16 Dec 22 Dec 28 Jan 4 Jan 13
First 32° Nov 8 Nov 15 Nov 20 Nov 25 Nov 29 Dec 3 Dec 7 Dec 12 Dec 19
First 36° Oct 29 Nov 4 Nov 8 Nov 11 Nov 15 Nov 18 Nov 21 Nov 25 Dec 1

Frost Dates for other nearby locations
  • Coden, AL
  • Pascagoula, MS
  • Fairhope, AL
  • Bay Minette, AL
  • Robertsdale, AL
  • Chatom, AL
  • Biloxi, MS
  • Saucier Exp Forest, MS
  • Wiggins, MS
  • Jackson, AL

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