First and last freeze/frost dates for Colorado Springs, CO ,United States

First and last freeze/frost dates for:
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Each winter, on average, your risk of frost is from
August 26 through June 30.

Almost certainly, however, you will receive frost from September 13 through June 4.

You are almost guaranteed that you will not get frost from July 25 through August 8.

Your frost-free growing season is around 57 days.

Detailed station data* follows:

Ruxton Park, CO (El Paso county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° Jul 25 Jul 16 Jul 10 Jul 5 Jun 30 Jun 25 Jun 19 Jun 13 Jun 4
Spring 28° Jun 23 Jun 18 Jun 15 Jun 12 Jun 9 Jun 6 Jun 3 May 30 May 25
Spring 24° Jun 11 Jun 4 May 30 May 26 May 23 May 19 May 15 May 10 May 4
Fall 32° Aug 8 Aug 14 Aug 18 Aug 22 Aug 26 Aug 29 Sep 2 Sep 7 Sep 13
Fall 28° Aug 30 Sep 3 Sep 7 Sep 9 Sep 12 Sep 15 Sep 18 Sep 21 Sep 25
Fall 24° Sep 10 Sep 14 Sep 17 Sep 20 Sep 22 Sep 25 Sep 27 Sep 30 Oct 5

Castle Rock, CO (Douglas county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° Jun 11 Jun 4 May 30 May 26 May 22 May 19 May 15 May 10 May 3
Spring 28° May 19 May 15 May 11 May 8 May 6 May 3 Apr 30 Apr 27 Apr 22
Spring 24° May 9 May 4 Apr 30 Apr 27 Apr 24 Apr 22 Apr 18 Apr 15 Apr 10
Fall 32° Sep 12 Sep 16 Sep 19 Sep 22 Sep 24 Sep 27 Sep 30 Oct 3 Oct 7
Fall 28° Sep 19 Sep 23 Sep 26 Sep 29 Oct 2 Oct 4 Oct 7 Oct 10 Oct 14
Fall 24° Sep 21 Sep 27 Oct 2 Oct 5 Oct 9 Oct 12 Oct 16 Oct 20 Oct 26

Colorado Spgs Wso Ap, CO (El Paso county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 15 May 11 May 8 May 6 May 4 May 2 Apr 30 Apr 27 Apr 24
Spring 28° May 5 May 1 Apr 27 Apr 24 Apr 22 Apr 19 Apr 16 Apr 12 Apr 8
Spring 24° Apr 29 Apr 24 Apr 21 Apr 18 Apr 16 Apr 13 Apr 10 Apr 7 Apr 2
Fall 32° Sep 20 Sep 24 Sep 27 Sep 30 Oct 3 Oct 5 Oct 8 Oct 11 Oct 15
Fall 28° Sep 24 Sep 29 Oct 3 Oct 7 Oct 10 Oct 14 Oct 17 Oct 21 Oct 27
Fall 24° Oct 8 Oct 13 Oct 16 Oct 20 Oct 23 Oct 26 Oct 29 Oct 31 Nov 6

* 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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