Frost Dates: First and last frost dates for Auburn, NE

ℹ️ How to read these charts for the spring

As spring unfolds, the risk of frost gradually decreases each day until your tender plants are finally safe. The probabilities shown in the chart help you make smart decisions about when to plant.

While frost typically forms at 32°F, tender plants can be damaged even when temperatures are slightly higher. Air temperatures are often measured several feet above the ground, but temperatures at plant level can be several degrees colder. Protected areas like porches help by blocking radiational cooling. Given these variables, we consider 36°F the "caution zone" for frost-sensitive plants.

Key dates for your spring planting:

  • By May 17, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
  • Around May 1, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
  • Before April 21, there's still an 80% risk of frost — too early for tomatoes and other tender plants unless you're prepared to protect them

If the 10-day forecast shows no temperatures below 40°F, you might safely plant earlier than the above dates suggest. Many gardeners watch for this weather window to get a head start on the growing season.

In the Spring
Temperature 10% 20% 30% 40% 50% 60% 70% 80% 90%
Last 16° Mar 28 Mar 23 Mar 18 Mar 15 Mar 11 Mar 8 Mar 4 Feb 28 Feb 22
Last 20° Apr 12 Apr 5 Apr 1 Mar 28 Mar 24 Mar 21 Mar 17 Mar 12 Mar 6
Last 24° Apr 17 Apr 12 Apr 8 Apr 5 Apr 2 Mar 30 Mar 27 Mar 24 Mar 19
Last 28° Apr 23 Apr 19 Apr 15 Apr 12 Apr 10 Apr 7 Apr 4 Apr 1 Mar 27
Last 32° May 11 May 6 May 2 Apr 28 Apr 25 Apr 22 Apr 18 Apr 14 Apr 9
Last 36° May 17 May 12 May 8 May 5 May 1 Apr 28 Apr 25 Apr 21 Apr 16

ℹ️ How to read these charts for the fall

As summer ends in Auburn, NE, nighttime temperatures begin to drop, and your risk of frost increases with each passing day. Knowing when to expect frost helps you harvest sensitive crops and extend your growing season with protection methods.

The chart below shows the probability of experiencing specific temperatures on various dates. Here's what this means for your garden:

1
Early warning: Around September 25, there's a 20% chance of 32°F — start monitoring forecasts and have plant covers ready
2
Decision time: By October 5, there's a 50% chance of frost — harvest tomatoes, peppers, and other tender crops or prepare protection
3
Last chance: By October 14, there's an 80% chance of seeing 32°F — most tender plants will be damaged without protection
4
Another perspective: You have only a 1 in 5 chance of making it past October 14 without a freezing night

These probabilities help you time your end-of-season harvests and know when to apply protective measures like row covers, cloches, or cold frames to extend your harvest.

In the Fall
Temperature 10% 20% 30% 40% 50% 60% 70% 80% 90%
First 16° Nov 2 Nov 8 Nov 13 Nov 17 Nov 21 Nov 25 Nov 29 Dec 4 Dec 10
First 20° Oct 24 Oct 30 Nov 3 Nov 7 Nov 11 Nov 14 Nov 18 Nov 22 Nov 29
First 24° Oct 11 Oct 17 Oct 21 Oct 25 Oct 29 Nov 1 Nov 5 Nov 10 Nov 16
First 28° Sep 28 Oct 5 Oct 10 Oct 14 Oct 18 Oct 21 Oct 26 Oct 30 Nov 6
First 32° Sep 19 Sep 25 Sep 28 Oct 2 Oct 5 Oct 8 Oct 11 Oct 14 Oct 20
First 36° Sep 17 Sep 20 Sep 23 Sep 25 Sep 27 Sep 29 Oct 1 Oct 4 Oct 8

📍 Frost Dates for other nearby locations

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