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First and last freeze/frost dates for Viroqua, WI ,United States

First and last freeze/frost dates for:
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Each winter, on average, your risk of frost is from October 9 through April 27.

Almost certainly, however, you will receive frost from October 23 through April 10.

You are almost guaranteed that you will not get frost from May 14 through September 24.

Your frost-free growing season is around 165 days.

Detailed station data* follows:

La Crosse Muni Ap, WI (La Crosse county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 14 May 8 May 4 Apr 30 Apr 27 Apr 24 Apr 20 Apr 16 Apr 10
Spring 28° Apr 29 Apr 24 Apr 21 Apr 18 Apr 15 Apr 12 Apr 9 Apr 6 Apr 1
Spring 24° Apr 16 Apr 12 Apr 10 Apr 7 Apr 5 Apr 3 Apr 1 Mar 30 Mar 26
Fall 32° Sep 24 Sep 29 Oct 3 Oct 6 Oct 9 Oct 11 Oct 14 Oct 18 Oct 23
Fall 28° Oct 5 Oct 10 Oct 14 Oct 17 Oct 20 Oct 23 Oct 27 Oct 30 Nov 4
Fall 24° Oct 13 Oct 19 Oct 23 Oct 26 Oct 29 Oct 31 Nov 4 Nov 8 Nov 13

Genoa Dam 8, WI (Vernon county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 8 May 3 Apr 29 Apr 26 Apr 23 Apr 20 Apr 17 Apr 13 Apr 8
Spring 28° Apr 26 Apr 21 Apr 18 Apr 15 Apr 13 Apr 10 Apr 7 Apr 4 Mar 30
Spring 24° Apr 14 Apr 11 Apr 8 Apr 6 Apr 3 Apr 1 Mar 30 Mar 27 Mar 23
Fall 32° Sep 23 Sep 28 Oct 2 Oct 5 Oct 8 Oct 11 Oct 14 Oct 18 Oct 23
Fall 28° Oct 7 Oct 13 Oct 16 Oct 20 Oct 23 Oct 26 Oct 29 Nov 1 Nov 7
Fall 24° Oct 21 Oct 25 Oct 28 Oct 31 Nov 2 Nov 4 Nov 7 Nov 10 Nov 14

Sparta, WI (Monroe county):

Temperature10%20%30%40%50%60%70%80%90%
Spring 32° May 26 May 21 May 18 May 15 May 13 May 10 May 7 May 4 Apr 29
Spring 28° May 17 May 10 May 6 May 2 Apr 28 Apr 24 Apr 20 Apr 16 Apr 9
Spring 24° May 1 Apr 26 Apr 22 Apr 19 Apr 16 Apr 13 Apr 10 Apr 7 Apr 2
Fall 32° Sep 6 Sep 12 Sep 17 Sep 20 Sep 24 Sep 27 Oct 1 Oct 5 Oct 11
Fall 28° Sep 20 Sep 25 Sep 28 Oct 1 Oct 4 Oct 6 Oct 9 Oct 13 Oct 18
Fall 24° Oct 2 Oct 8 Oct 13 Oct 16 Oct 19 Oct 23 Oct 26 Oct 31 Nov 4

* 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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