Frost Dates: First and last frost dates for Las Vegas, NM

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 June 4. 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 May 12, so we don't dare plant that early. We wait a few days and by May 21 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° Apr 14 Apr 7 Apr 2 Mar 28 Mar 24 Mar 20 Mar 15 Mar 10 Mar 3
Last 20° Apr 22 Apr 17 Apr 13 Apr 9 Apr 6 Apr 3 Mar 30 Mar 26 Mar 20
Last 24° May 7 May 1 Apr 27 Apr 23 Apr 19 Apr 16 Apr 12 Apr 8 Apr 2
Last 28° May 15 May 11 May 7 May 5 May 2 Apr 29 Apr 27 Apr 24 Apr 19
Last 32° May 23 May 19 May 15 May 13 May 10 May 7 May 5 May 1 Apr 27
Last 36° Jun 4 May 30 May 27 May 24 May 21 May 18 May 15 May 12 May 7

How to read these charts for the fall
As your growing season comes to an end, the nightly temperatures for Las Vegas, NM 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 September 24, and by October 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 September 27.
  2. There is a 50% chance of being hit by a 32° frost starting around October 5
  3. You have a 80% chance of seeing 32° by October 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° Oct 29 Nov 4 Nov 9 Nov 13 Nov 16 Nov 20 Nov 24 Nov 28 Dec 5
First 20° Oct 17 Oct 23 Oct 28 Nov 1 Nov 4 Nov 8 Nov 12 Nov 16 Nov 23
First 24° Oct 11 Oct 16 Oct 20 Oct 23 Oct 26 Oct 29 Nov 2 Nov 5 Nov 11
First 28° Oct 4 Oct 8 Oct 11 Oct 14 Oct 17 Oct 19 Oct 22 Oct 25 Oct 30
First 32° Sep 24 Sep 27 Sep 30 Oct 3 Oct 5 Oct 7 Oct 9 Oct 12 Oct 16
First 36° Sep 18 Sep 22 Sep 24 Sep 26 Sep 28 Sep 30 Oct 2 Oct 4 Oct 7

Frost Dates for other nearby locations
  • Valmora, NM
  • Dilia, NM
  • Gascon, NM
  • Ocate, NM
  • Pecos Nm, NM
  • Santa Rosa, NM
  • Clines Corners, NM
  • Cimarron, NM
  • Conchas Dam, NM
  • Springer, NM

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