Frost Dates: First and last frost dates for Ashland No, NE

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 May 17. 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 April 25, so we don't dare plant that early. We wait a few days and by May 4 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° Mar 31 Mar 25 Mar 21 Mar 18 Mar 15 Mar 12 Mar 9 Mar 5 Feb 28
Last 20° Apr 10 Apr 4 Mar 31 Mar 27 Mar 24 Mar 21 Mar 17 Mar 13 Mar 8
Last 24° Apr 15 Apr 11 Apr 7 Apr 5 Apr 2 Mar 30 Mar 27 Mar 24 Mar 20
Last 28° Apr 26 Apr 21 Apr 18 Apr 15 Apr 12 Apr 10 Apr 7 Apr 3 Mar 30
Last 32° May 10 May 5 May 1 Apr 28 Apr 26 Apr 23 Apr 20 Apr 16 Apr 11
Last 36° May 17 May 12 May 9 May 6 May 4 May 1 Apr 28 Apr 25 Apr 20

How to read these charts for the fall
As your growing season comes to an end, the nightly temperatures for Ashland No, NE 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 22, and by October 17 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 28.
  2. There is a 50% chance of being hit by a 32° frost starting around October 7
  3. You have a 80% chance of seeing 32° by October 17
  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 31 Nov 6 Nov 11 Nov 15 Nov 19 Nov 23 Nov 27 Dec 1 Dec 8
First 20° Oct 21 Oct 27 Nov 1 Nov 5 Nov 9 Nov 13 Nov 17 Nov 22 Nov 28
First 24° Oct 15 Oct 21 Oct 25 Oct 28 Oct 31 Nov 3 Nov 7 Nov 11 Nov 16
First 28° Oct 4 Oct 9 Oct 13 Oct 17 Oct 20 Oct 24 Oct 27 Oct 31 Nov 6
First 32° Sep 22 Sep 28 Oct 1 Oct 4 Oct 7 Oct 10 Oct 13 Oct 17 Oct 22
First 36° Sep 15 Sep 19 Sep 23 Sep 25 Sep 28 Oct 1 Oct 3 Oct 7 Oct 11

Frost Dates for other nearby locations
  • Mead, NE
  • Weeping Water, NE
  • Wahoo, NE
  • Fremont, NE
  • Syracuse, NE
  • Lincoln, NE
  • Omaha #1, NE
  • Omaha Eppley Airfield, NE
  • Blair, NE
  • Nebraska City, NE

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