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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 station, you will see a temperature along with a pile of percentage columns. Here's how it works: The percent column tells you the probability that you will experience that row's temperature on or before that date.

So, for example, in the Spring 32° row, if you have "Apr 15" under the 50% column, that means that you have a 50% chance of seeing frost on or before April 15th.

Another example. Say in the Fall 24° row, under 90%, you have Dec 1, then that means that you have a 90% chance of seeing 24 degrees on or before December 1st.

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


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