Frost Dates: First and last frost dates for Dufurrena - Denio, NV

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 July 9, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
  • Around June 22, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
  • Before June 10, 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° Apr 28 Apr 16 Apr 8 Apr 1 Mar 25 Mar 19 Mar 12 Mar 3 Feb 20
Last 20° May 8 Apr 29 Apr 23 Apr 18 Apr 13 Apr 9 Apr 3 Mar 28 Mar 20
Last 24° May 19 May 13 May 9 May 5 May 2 Apr 28 Apr 24 Apr 20 Apr 14
Last 28° Jun 1 May 26 May 22 May 19 May 15 May 12 May 9 May 5 Apr 29
Last 32° Jun 28 Jun 21 Jun 16 Jun 11 Jun 7 Jun 3 May 30 May 25 May 18
Last 36° Jul 9 Jul 3 Jun 29 Jun 25 Jun 22 Jun 18 Jun 14 Jun 10 Jun 4

ℹ️ How to read these charts for the fall

As summer ends in Dufurrena - Denio, NV, 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 5, there's a 20% chance of 32°F — start monitoring forecasts and have plant covers ready
2
Decision time: By September 14, there's a 50% chance of frost — harvest tomatoes, peppers, and other tender crops or prepare protection
3
Last chance: By September 24, 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 September 24 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° Oct 16 Oct 23 Oct 29 Nov 2 Nov 6 Nov 11 Nov 15 Nov 21 Nov 28
First 20° Oct 3 Oct 9 Oct 14 Oct 17 Oct 21 Oct 24 Oct 28 Nov 1 Nov 7
First 24° Sep 24 Sep 30 Oct 4 Oct 8 Oct 11 Oct 15 Oct 18 Oct 23 Oct 29
First 28° Sep 13 Sep 19 Sep 23 Sep 26 Sep 30 Oct 3 Oct 6 Oct 11 Oct 16
First 32° Aug 31 Sep 5 Sep 8 Sep 12 Sep 14 Sep 17 Sep 20 Sep 24 Sep 29
First 36° Aug 19 Aug 24 Aug 28 Aug 31 Sep 3 Sep 6 Sep 9 Sep 12 Sep 18

📍 Frost Dates for other nearby locations

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