Frost Dates: First and last frost dates for Atlanta Hartsfield Ap, GA

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 April 18, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
  • Around April 4, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
  • Before March 25, 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° Feb 21 Feb 12 Feb 6 Jan 31 Jan 24 Jan 16 Jan 2 -- --
Last 20° Mar 8 Feb 27 Feb 21 Feb 15 Feb 10 Feb 5 Jan 30 Jan 23 Jan 12
Last 24° Mar 11 Mar 3 Feb 25 Feb 20 Feb 16 Feb 11 Feb 6 Jan 31 Jan 23
Last 28° Mar 26 Mar 19 Mar 13 Mar 8 Mar 4 Feb 28 Feb 23 Feb 17 Feb 10
Last 32° Apr 14 Apr 7 Apr 1 Mar 28 Mar 24 Mar 20 Mar 15 Mar 10 Mar 3
Last 36° Apr 18 Apr 13 Apr 10 Apr 7 Apr 4 Apr 1 Mar 29 Mar 25 Mar 20

ℹ️ How to read these charts for the fall

As summer ends in Atlanta Hartsfield Ap, GA, 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 November 5, there's a 20% chance of 32°F — start monitoring forecasts and have plant covers ready
2
Decision time: By November 16, there's a 50% chance of frost — harvest tomatoes, peppers, and other tender crops or prepare protection
3
Last chance: By November 26, 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 November 26 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° Dec 11 Dec 22 Dec 30 Jan 6 Jan 14 Jan 24 Feb 10 -- --
First 20° Dec 2 Dec 12 Dec 20 Dec 26 Jan 1 Jan 7 Jan 13 Jan 21 Feb 2
First 24° Nov 24 Dec 3 Dec 9 Dec 14 Dec 19 Dec 24 Dec 30 Jan 5 Jan 14
First 28° Nov 6 Nov 16 Nov 23 Nov 29 Dec 5 Dec 10 Dec 16 Dec 24 Jan 2
First 32° Oct 31 Nov 5 Nov 9 Nov 13 Nov 16 Nov 19 Nov 22 Nov 26 Dec 1
First 36° Oct 19 Oct 24 Oct 28 Oct 31 Nov 3 Nov 6 Nov 9 Nov 13 Nov 18

📍 Frost Dates for other nearby locations

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