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First and last freeze/frost dates for Prescott, AZ ,United States

First and last freeze/frost dates for:
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Each winter, on average, your risk of frost is from October 5 through May 26.

Almost certainly, however, you will receive frost from October 22 through May 5.

You are almost guaranteed that you will not get frost from June 15 through September 17.

Your frost-free growing season is around 132 days.

Detailed station data* follows:

Walnut Creek Rs, AZ (Yavapai county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° Jun 15 Jun 8 Jun 3 May 30 May 26 May 22 May 18 May 12 May 5
Spring 28° May 31 May 24 May 19 May 14 May 10 May 6 May 2 Apr 27 Apr 20
Spring 24° May 19 May 9 May 2 Apr 26 Apr 20 Apr 14 Apr 8 Apr 1 Mar 22
Fall 32° Sep 17 Sep 23 Sep 27 Oct 1 Oct 5 Oct 8 Oct 12 Oct 16 Oct 22
Fall 28° Sep 30 Oct 6 Oct 10 Oct 14 Oct 17 Oct 20 Oct 24 Oct 28 Nov 1
Fall 24° Oct 15 Oct 20 Oct 24 Oct 27 Oct 30 Nov 1 Nov 4 Nov 8 Nov 13

Chino Valley, AZ (Yavapai county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 25 May 18 May 13 May 8 May 4 Apr 30 Apr 26 Apr 21 Apr 14
Spring 28° May 14 May 5 Apr 30 Apr 24 Apr 20 Apr 15 Apr 10 Apr 4 Mar 27
Spring 24° Apr 28 Apr 18 Apr 11 Apr 5 Mar 31 Mar 25 Mar 19 Mar 12 Mar 2
Fall 32° Oct 7 Oct 12 Oct 15 Oct 18 Oct 21 Oct 24 Oct 27 Oct 30 Nov 3
Fall 28° Oct 13 Oct 19 Oct 23 Oct 26 Oct 29 Oct 31 Nov 4 Nov 8 Nov 13
Fall 24° Oct 27 Oct 31 Nov 2 Nov 5 Nov 8 Nov 10 Nov 13 Nov 16 Nov 21

Prescott, AZ (Yavapai county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 23 May 18 May 14 May 10 May 7 May 4 May 1 Apr 27 Apr 22
Spring 28° May 16 May 8 May 2 Apr 28 Apr 23 Apr 18 Apr 13 Apr 8 Mar 31
Spring 24° May 4 Apr 24 Apr 16 Apr 10 Apr 4 Mar 29 Mar 22 Mar 15 Mar 4
Fall 32° Sep 30 Oct 6 Oct 10 Oct 14 Oct 18 Oct 21 Oct 25 Oct 29 Nov 3
Fall 28° Oct 7 Oct 14 Oct 18 Oct 22 Oct 26 Oct 30 Nov 2 Nov 7 Nov 13
Fall 24° Oct 20 Oct 26 Oct 30 Nov 2 Nov 5 Nov 8 Nov 11 Nov 15 Nov 21

* This station data is available courtesy the National Climatic Data Center.

For each weather station, you will see a temperature along with tables of data organized into percentage columns. The percentage column tells you the probability that you will experience that row's temperature on or near that date. Here are two examples to help you determine your probable last frost and first freeze dates.

Example 1 (Last Frost). In the Spring 32° row, if you have "Apr 15" under the 50% column, that means you have a 50% chance of seeing frost on or before April 15th.

Example 2 (First Freeze). In the Fall 24° row, if you have "Dec 1" under the 90% column, that means you have a 90% chance of seeing 24 degrees on or after December 1st.

Empty cells indicate you have a less than 10% chance of ever seeing that temperature.


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