Frost Dates: First and last frost dates for Calhoun City, MS

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 27, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
  • Around April 15, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
  • Before April 7, 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 2 Feb 21 Feb 14 Feb 9 Feb 3 Jan 29 Jan 22 Jan 14 Dec 31
Last 20° Mar 10 Mar 2 Feb 24 Feb 19 Feb 15 Feb 10 Feb 5 Jan 30 Jan 22
Last 24° Mar 16 Mar 9 Mar 4 Feb 28 Feb 24 Feb 20 Feb 16 Feb 11 Feb 4
Last 28° Apr 6 Mar 31 Mar 27 Mar 23 Mar 20 Mar 17 Mar 13 Mar 9 Mar 3
Last 32° Apr 15 Apr 11 Apr 9 Apr 7 Apr 5 Apr 2 Mar 31 Mar 29 Mar 25
Last 36° Apr 27 Apr 23 Apr 20 Apr 17 Apr 15 Apr 12 Apr 10 Apr 7 Apr 2

ℹ️ How to read these charts for the fall

As summer ends in Calhoun City, MS, 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 October 17, there's a 20% chance of 32°F — start monitoring forecasts and have plant covers ready
2
Decision time: By October 29, there's a 50% chance of frost — harvest tomatoes, peppers, and other tender crops or prepare protection
3
Last chance: By November 9, 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 9 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 3 Dec 13 Dec 20 Dec 27 Jan 1 Jan 7 Jan 14 Jan 23 Feb 8
First 20° Nov 17 Nov 27 Dec 5 Dec 11 Dec 17 Dec 22 Dec 29 Jan 5 Jan 15
First 24° Nov 9 Nov 16 Nov 20 Nov 24 Nov 28 Dec 1 Dec 5 Dec 10 Dec 16
First 28° Oct 24 Oct 30 Nov 3 Nov 6 Nov 9 Nov 12 Nov 16 Nov 20 Nov 25
First 32° Oct 12 Oct 17 Oct 22 Oct 25 Oct 29 Nov 1 Nov 4 Nov 9 Nov 14
First 36° Oct 4 Oct 8 Oct 11 Oct 13 Oct 16 Oct 18 Oct 20 Oct 23 Oct 27

📍 Frost Dates for other nearby locations

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