Frost Dates: First and last frost dates for Maple City, MI

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 June 25, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
  • Around June 9, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
  • Before May 28, 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 16 Apr 11 Apr 8 Apr 5 Apr 2 Mar 30 Mar 27 Mar 23 Mar 18
Last 20° Apr 27 Apr 22 Apr 19 Apr 16 Apr 13 Apr 10 Apr 8 Apr 4 Mar 31
Last 24° May 12 May 7 May 4 May 1 Apr 29 Apr 26 Apr 23 Apr 20 Apr 15
Last 28° May 25 May 21 May 17 May 15 May 12 May 9 May 6 May 3 Apr 28
Last 32° Jun 14 Jun 8 Jun 4 Jun 1 May 29 May 26 May 23 May 19 May 14
Last 36° Jun 25 Jun 20 Jun 15 Jun 12 Jun 9 Jun 5 Jun 2 May 28 May 23

ℹ️ How to read these charts for the fall

As summer ends in Maple City, MI, 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 21, there's a 20% chance of 32°F — start monitoring forecasts and have plant covers ready
2
Decision time: By October 1, there's a 50% chance of frost — harvest tomatoes, peppers, and other tender crops or prepare protection
3
Last chance: By October 11, 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 11 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° Nov 11 Nov 18 Nov 22 Nov 26 Nov 30 Dec 4 Dec 8 Dec 13 Dec 20
First 20° Nov 2 Nov 7 Nov 11 Nov 14 Nov 16 Nov 19 Nov 22 Nov 25 Nov 30
First 24° Oct 18 Oct 24 Oct 28 Nov 1 Nov 4 Nov 8 Nov 11 Nov 16 Nov 22
First 28° Oct 1 Oct 7 Oct 12 Oct 16 Oct 19 Oct 23 Oct 27 Oct 31 Nov 6
First 32° Sep 16 Sep 21 Sep 25 Sep 28 Oct 1 Oct 4 Oct 7 Oct 11 Oct 16
First 36° Aug 30 Sep 6 Sep 11 Sep 15 Sep 19 Sep 23 Sep 27 Oct 2 Oct 9

📍 Frost Dates for other nearby locations

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