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First and last freeze/frost dates for Bend, OR ,United States

First and last freeze/frost dates for:
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Each winter, on average, your risk of frost is from August 17 through July 12.

Almost certainly, however, you will receive frost from September 2 through June 23.

You are almost guaranteed that you will not get frost from July 31 through August 2.

Your frost-free growing season is around 36 days.

Detailed station data* follows:

Sisters, OR (Deschutes county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° Jul 31 Jul 24 Jul 20 Jul 16 Jul 12 Jul 8 Jul 4 Jun 30 Jun 23
Spring 28° Jul 18 Jul 10 Jul 4 Jun 28 Jun 24 Jun 19 Jun 13 Jun 7 May 30
Spring 24° Jun 18 Jun 10 Jun 4 May 30 May 25 May 20 May 15 May 9 May 1
Fall 32° Aug 2 Aug 7 Aug 11 Aug 14 Aug 17 Aug 20 Aug 24 Aug 27 Sep 2
Fall 28° Aug 19 Aug 25 Aug 29 Sep 1 Sep 4 Sep 7 Sep 11 Sep 15 Sep 20
Fall 24° Sep 4 Sep 10 Sep 15 Sep 19 Sep 23 Sep 27 Oct 1 Oct 5 Oct 12

Bend, OR (Deschutes county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° Jul 14 Jul 7 Jul 2 Jun 28 Jun 24 Jun 21 Jun 17 Jun 12 Jun 5
Spring 28° Jun 23 Jun 15 Jun 10 Jun 5 May 31 May 26 May 21 May 16 May 8
Spring 24° May 27 May 20 May 15 May 11 May 8 May 4 Apr 30 Apr 25 Apr 18
Fall 32° Aug 21 Aug 27 Aug 31 Sep 3 Sep 7 Sep 10 Sep 14 Sep 18 Sep 24
Fall 28° Sep 7 Sep 12 Sep 16 Sep 19 Sep 21 Sep 24 Sep 27 Sep 30 Oct 5
Fall 24° Sep 23 Sep 29 Oct 3 Oct 7 Oct 10 Oct 14 Oct 17 Oct 21 Oct 27

Redmond Faa Ap, OR (Deschutes county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° Jul 7 Jun 30 Jun 26 Jun 22 Jun 19 Jun 15 Jun 11 Jun 7 Jun 1
Spring 28° Jun 20 Jun 13 Jun 8 Jun 4 May 30 May 26 May 22 May 17 May 10
Spring 24° May 24 May 17 May 12 May 8 May 4 Apr 30 Apr 25 Apr 20 Apr 14
Fall 32° Aug 24 Aug 30 Sep 4 Sep 7 Sep 11 Sep 14 Sep 18 Sep 22 Sep 28
Fall 28° Sep 11 Sep 17 Sep 21 Sep 24 Sep 27 Oct 1 Oct 4 Oct 8 Oct 14
Fall 24° Sep 25 Oct 1 Oct 5 Oct 9 Oct 12 Oct 16 Oct 19 Oct 24 Oct 29

* 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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