Frost Dates: First and last frost dates for Arthur, 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 23, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
  • Around June 30, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
  • Before June 15, 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 23 Apr 12 Apr 5 Mar 29 Mar 23 Mar 17 Mar 10 Mar 3 Feb 20
Last 20° May 9 May 1 Apr 26 Apr 21 Apr 16 Apr 12 Apr 7 Apr 1 Mar 24
Last 24° May 23 May 17 May 12 May 8 May 4 Apr 30 Apr 26 Apr 21 Apr 14
Last 28° Jun 9 Jun 2 May 28 May 24 May 20 May 16 May 12 May 7 Apr 30
Last 32° Jul 2 Jun 24 Jun 18 Jun 13 Jun 9 Jun 4 May 30 May 24 May 16
Last 36° Jul 23 Jul 15 Jul 9 Jul 5 Jun 30 Jun 26 Jun 21 Jun 15 Jun 7

ℹ️ How to read these charts for the fall

As summer ends in Arthur, 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 30, there's a 20% chance of 32°F — start monitoring forecasts and have plant covers ready
2
Decision time: By September 10, 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° Oct 5 Oct 11 Oct 16 Oct 20 Oct 24 Oct 27 Oct 31 Nov 5 Nov 11
First 20° Sep 23 Sep 30 Oct 6 Oct 10 Oct 15 Oct 19 Oct 23 Oct 29 Nov 5
First 24° Sep 9 Sep 16 Sep 21 Sep 25 Sep 30 Oct 4 Oct 8 Oct 13 Oct 20
First 28° Sep 2 Sep 9 Sep 14 Sep 18 Sep 22 Sep 25 Sep 30 Oct 4 Oct 11
First 32° Aug 25 Aug 30 Sep 3 Sep 7 Sep 10 Sep 13 Sep 17 Sep 21 Sep 26
First 36° Aug 7 Aug 14 Aug 19 Aug 24 Aug 28 Sep 1 Sep 5 Sep 11 Sep 18

📍 Frost Dates for other nearby locations

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