First and last freeze/frost dates for Sullivan, IN ,United States

First and last freeze/frost dates for:
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Each winter, on average, your risk of frost is from October 17 through April 14.

Almost certainly, however, you will receive frost from November 7 through April 1.

You are almost guaranteed that you will not get frost from April 28 through September 24.

Your frost-free growing season is around 186 days.

Detailed station data* follows:

Palestine, IL (Crawford county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° Apr 28 Apr 23 Apr 20 Apr 17 Apr 14 Apr 12 Apr 9 Apr 5 Apr 1
Spring 28° Apr 16 Apr 11 Apr 7 Apr 4 Apr 1 Mar 29 Mar 25 Mar 22 Mar 16
Spring 24° Apr 7 Apr 1 Mar 28 Mar 25 Mar 22 Mar 18 Mar 15 Mar 11 Mar 5
Fall 32° Sep 24 Oct 2 Oct 7 Oct 12 Oct 17 Oct 21 Oct 26 Oct 31 Nov 7
Fall 28° Oct 13 Oct 19 Oct 23 Oct 26 Oct 29 Oct 31 Nov 3 Nov 7 Nov 12
Fall 24° Oct 23 Oct 29 Nov 2 Nov 6 Nov 9 Nov 13 Nov 16 Nov 21 Nov 27

Terre Haute 8 S, IN (Vigo county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 8 May 2 Apr 27 Apr 23 Apr 20 Apr 16 Apr 12 Apr 8 Apr 1
Spring 28° Apr 18 Apr 13 Apr 9 Apr 6 Apr 3 Mar 31 Mar 28 Mar 24 Mar 19
Spring 24° Apr 11 Apr 5 Apr 1 Mar 29 Mar 26 Mar 22 Mar 19 Mar 15 Mar 9
Fall 32° Sep 29 Oct 4 Oct 8 Oct 12 Oct 15 Oct 18 Oct 21 Oct 25 Oct 31
Fall 28° Oct 12 Oct 17 Oct 21 Oct 25 Oct 28 Oct 31 Nov 3 Nov 7 Nov 13
Fall 24° Oct 19 Oct 26 Oct 31 Nov 4 Nov 9 Nov 13 Nov 18 Nov 23 Dec 2

Paris Wtr Wks, IL (Edgar county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 2 Apr 27 Apr 23 Apr 20 Apr 16 Apr 13 Apr 10 Apr 6 Apr 1
Spring 28° Apr 20 Apr 15 Apr 12 Apr 9 Apr 6 Apr 3 Mar 31 Mar 27 Mar 22
Spring 24° Apr 9 Apr 5 Apr 1 Mar 30 Mar 27 Mar 24 Mar 22 Mar 18 Mar 14
Fall 32° Sep 30 Oct 5 Oct 9 Oct 13 Oct 16 Oct 19 Oct 23 Oct 27 Oct 31
Fall 28° Oct 12 Oct 18 Oct 23 Oct 26 Oct 30 Nov 2 Nov 5 Nov 10 Nov 16
Fall 24° Oct 27 Oct 31 Nov 3 Nov 7 Nov 9 Nov 12 Nov 15 Nov 19 Nov 24

* 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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