Frost Dates: First and last frost dates for Rapid City Regional Ap, SD

For fall, there is an 80% chance that you will suffer your first hard 24° freeze by October 27, but very light surprise frosts of 36° might start hitting your garden around Septemberr 25. You have a 50% chance of being hit by 32° frost starting Septemberr 27.

In the Fall
Temperature 10% 20% 30% 40% 50% 60% 70% 80% 90%
First 16° Oct 19 Oct 25 Oct 29 Nov 1 Nov 4 Nov 7 Nov 11 Nov 15 Nov 20
First 20° Oct 8 Oct 14 Oct 18 Oct 21 Oct 25 Oct 28 Nov 1 Nov 5 Nov 11
First 24° Sep 25 Oct 2 Oct 6 Oct 10 Oct 14 Oct 18 Oct 22 Oct 27 Nov 2
First 28° Sep 21 Sep 27 Oct 1 Oct 4 Oct 7 Oct 10 Oct 14 Oct 18 Oct 23
First 32° Sep 13 Sep 18 Sep 21 Sep 24 Sep 27 Sep 30 Oct 3 Oct 6 Oct 11
First 36° Sep 9 Sep 13 Sep 15 Sep 17 Sep 19 Sep 20 Sep 22 Sep 25 Sep 28

For spring, there is an 80% chance that you will be past the danger of a hard 24° freeze on April 10, but very light surprise frosts of 36° can still hit until around May 13. Do you like to live on the edge? You have a 50% chance of being past 32° frost by May 9.

In the Spring
Temperature 10% 20% 30% 40% 50% 60% 70% 80% 90%
Last 16° Apr 11 Apr 6 Apr 2 Mar 29 Mar 26 Mar 23 Mar 20 Mar 16 Mar 10
Last 20° Apr 21 Apr 15 Apr 11 Apr 8 Apr 5 Apr 2 Mar 30 Mar 26 Mar 20
Last 24° May 1 Apr 27 Apr 24 Apr 21 Apr 19 Apr 16 Apr 13 Apr 10 Apr 6
Last 28° May 12 May 7 May 4 May 1 Apr 28 Apr 25 Apr 22 Apr 19 Apr 14
Last 32° May 25 May 20 May 16 May 12 May 9 May 6 May 2 Apr 28 Apr 23
Last 36° Jun 11 Jun 5 Jun 1 May 28 May 24 May 21 May 17 May 13 May 7

Now that you know your frost dates, use our Garden Planting Calendar for Rapid City Regional Ap, SD to know when to sow and transplant your various vegetable plants!

Data is provided by the NOAA National Centers for Environmental Information. Photography by Garden.org member TBGDN.

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