Frost Dates: First and last frost dates for Doyle, CA

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 14, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
  • Around June 21, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
  • Before June 6, 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 27 Mar 17 Mar 9 Mar 2 Feb 24 Feb 18 Feb 11 Feb 4 Jan 24
Last 20° Apr 19 Apr 9 Apr 2 Mar 27 Mar 21 Mar 15 Mar 9 Mar 2 Feb 20
Last 24° May 7 May 1 Apr 27 Apr 23 Apr 19 Apr 16 Apr 12 Apr 7 Apr 1
Last 28° Jun 5 May 28 May 22 May 17 May 12 May 7 May 2 Apr 26 Apr 17
Last 32° Jun 30 Jun 21 Jun 15 Jun 10 Jun 5 May 31 May 25 May 19 May 11
Last 36° Jul 14 Jul 6 Jun 30 Jun 26 Jun 21 Jun 17 Jun 12 Jun 6 May 29

ℹ️ How to read these charts for the fall

As summer ends in Doyle, CA, 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 10, there's a 20% chance of 32°F — start monitoring forecasts and have plant covers ready
2
Decision time: By September 22, there's a 50% chance of frost — harvest tomatoes, peppers, and other tender crops or prepare protection
3
Last chance: By October 4, 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 4 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 31 Nov 8 Nov 14 Nov 19 Nov 23 Nov 28 Dec 2 Dec 8 Dec 16
First 20° Oct 12 Oct 19 Oct 25 Oct 30 Nov 3 Nov 7 Nov 12 Nov 18 Nov 25
First 24° Oct 1 Oct 8 Oct 12 Oct 17 Oct 20 Oct 24 Oct 28 Nov 2 Nov 9
First 28° Sep 16 Sep 22 Sep 27 Oct 1 Oct 5 Oct 8 Oct 12 Oct 17 Oct 23
First 32° Sep 4 Sep 10 Sep 14 Sep 18 Sep 22 Sep 26 Sep 30 Oct 4 Oct 10
First 36° Aug 15 Aug 21 Aug 26 Aug 29 Sep 2 Sep 6 Sep 10 Sep 14 Sep 20

📍 Frost Dates for other nearby locations

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