First and last freeze/frost dates for Paterson, WA ,United States

First and last freeze/frost dates for:
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Each winter, on average, your risk of frost is from
October 12 through April 22.

Almost certainly, however, you will receive frost from October 26 through April 5.

You are almost guaranteed that you will not get frost from May 9 through September 29.

Your frost-free growing season is around 173 days.

Detailed station data* follows:

Sunnyside, WA (Yakima county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 9 May 3 Apr 29 Apr 25 Apr 22 Apr 19 Apr 15 Apr 11 Apr 5
Spring 28° Apr 23 Apr 14 Apr 8 Apr 2 Mar 28 Mar 23 Mar 18 Mar 12 Mar 3
Spring 24° Mar 31 Mar 21 Mar 14 Mar 8 Mar 2 Feb 24 Feb 18 Feb 11 Feb 1
Fall 32° Sep 29 Oct 3 Oct 7 Oct 9 Oct 12 Oct 15 Oct 18 Oct 21 Oct 26
Fall 28° Oct 14 Oct 18 Oct 21 Oct 24 Oct 26 Oct 29 Oct 31 Nov 2 Nov 7
Fall 24° Oct 26 Oct 31 Nov 4 Nov 8 Nov 11 Nov 15 Nov 18 Nov 23 Nov 29

Prosser 4 Ne, WA (Benton county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 16 May 10 May 5 May 2 Apr 28 Apr 24 Apr 21 Apr 16 Apr 10
Spring 28° May 1 Apr 22 Apr 15 Apr 9 Apr 4 Mar 30 Mar 24 Mar 17 Mar 8
Spring 24° Apr 11 Apr 1 Mar 24 Mar 17 Mar 11 Mar 5 Feb 26 Feb 19 Feb 8
Fall 32° Sep 23 Sep 28 Oct 2 Oct 6 Oct 9 Oct 12 Oct 16 Oct 20 Oct 25
Fall 28° Oct 6 Oct 13 Oct 17 Oct 21 Oct 25 Oct 29 Nov 1 Nov 5 Nov 12
Fall 24° Oct 10 Oct 19 Oct 26 Oct 31 Nov 5 Nov 10 Nov 16 Nov 22 Dec 3

Bickleton, WA (Klickitat county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° Jun 17 Jun 10 Jun 4 May 31 May 27 May 22 May 18 May 12 May 5
Spring 28° May 23 May 17 May 12 May 8 May 4 May 1 Apr 27 Apr 22 Apr 15
Spring 24° May 1 Apr 19 Apr 11 Apr 4 Mar 28 Mar 21 Mar 14 Mar 6 Feb 22
Fall 32° Sep 22 Sep 28 Oct 2 Oct 6 Oct 10 Oct 13 Oct 17 Oct 21 Oct 28
Fall 28° Oct 6 Oct 11 Oct 15 Oct 19 Oct 22 Oct 25 Oct 29 Nov 1 Nov 6
Fall 24° Oct 20 Oct 26 Oct 30 Nov 2 Nov 5 Nov 9 Nov 12 Nov 17 Nov 23

* 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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