Frost Dates: First and last frost dates for Mcdermitt, 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 27, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
  • Around July 4, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
  • Before June 19, 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 11 Apr 28 Apr 19 Apr 12 Apr 4 Mar 28 Mar 21 Mar 12 Feb 27
Last 20° May 19 May 10 May 4 Apr 29 Apr 24 Apr 19 Apr 14 Apr 8 Mar 30
Last 24° May 30 May 23 May 18 May 13 May 9 May 5 May 1 Apr 25 Apr 18
Last 28° Jun 30 Jun 21 Jun 14 Jun 9 Jun 3 May 29 May 24 May 17 May 8
Last 32° Jul 18 Jul 8 Jul 2 Jun 26 Jun 20 Jun 15 Jun 9 Jun 2 May 24
Last 36° Jul 27 Jul 19 Jul 14 Jul 9 Jul 4 Jun 30 Jun 25 Jun 19 Jun 11

ℹ️ How to read these charts for the fall

As summer ends in Mcdermitt, 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 August 22, there's a 20% chance of 32°F — start monitoring forecasts and have plant covers ready
2
Decision time: By September 6, there's a 50% chance of frost — harvest tomatoes, peppers, and other tender crops or prepare protection
3
Last chance: By September 21, 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 21 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° Sep 28 Oct 5 Oct 10 Oct 14 Oct 18 Oct 22 Oct 26 Oct 31 Nov 7
First 20° Sep 17 Sep 24 Sep 29 Oct 3 Oct 8 Oct 12 Oct 16 Oct 21 Oct 28
First 24° Sep 7 Sep 14 Sep 18 Sep 22 Sep 26 Sep 30 Oct 4 Oct 9 Oct 16
First 28° Aug 28 Sep 4 Sep 9 Sep 13 Sep 17 Sep 21 Sep 25 Sep 30 Oct 7
First 32° Aug 15 Aug 22 Aug 28 Sep 2 Sep 6 Sep 10 Sep 15 Sep 21 Sep 28
First 36° Aug 3 Aug 9 Aug 13 Aug 17 Aug 21 Aug 24 Aug 28 Sep 1 Sep 7

📍 Frost Dates for other nearby locations

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