Frost Dates: First and last frost dates for Winnemucca, 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 12, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
  • Around June 24, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
  • Before June 12, 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° May 2 Apr 21 Apr 13 Apr 7 Mar 31 Mar 25 Mar 18 Mar 11 Feb 28
Last 20° May 16 May 7 May 1 Apr 26 Apr 21 Apr 16 Apr 10 Apr 4 Mar 27
Last 24° May 18 May 11 May 6 May 2 Apr 28 Apr 24 Apr 20 Apr 15 Apr 9
Last 28° Jun 12 Jun 4 May 29 May 24 May 19 May 15 May 10 May 4 Apr 25
Last 32° Jun 29 Jun 22 Jun 17 Jun 13 Jun 9 Jun 5 May 31 May 26 May 19
Last 36° Jul 12 Jul 6 Jul 2 Jun 28 Jun 24 Jun 21 Jun 17 Jun 12 Jun 6

ℹ️ How to read these charts for the fall

As summer ends in Winnemucca, 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 4, 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 9 Oct 15 Oct 20 Oct 24 Oct 28 Nov 1 Nov 5 Nov 9 Nov 16
First 20° Sep 26 Oct 2 Oct 6 Oct 9 Oct 12 Oct 16 Oct 19 Oct 23 Oct 29
First 24° Sep 20 Sep 25 Sep 29 Oct 2 Oct 5 Oct 8 Oct 11 Oct 15 Oct 20
First 28° Sep 5 Sep 11 Sep 16 Sep 19 Sep 23 Sep 26 Sep 30 Oct 4 Oct 10
First 32° Aug 29 Sep 4 Sep 7 Sep 11 Sep 14 Sep 17 Sep 20 Sep 24 Sep 29
First 36° Aug 13 Aug 19 Aug 23 Aug 27 Aug 31 Sep 3 Sep 7 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.