Wisconsin Dells Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Wisconsin Dells, Wisconsin during each month of the year.

The average high and low temperatures are listed below monthly and annually for this popular vacation spot, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month in Wisconsin Dells, scroll down farther. There are also monthly and yearly counts of days with cold weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Wisconsin Dells, 2010 to 2019
High °F Low °F   High °C Low °C
26 7 January -3 -14
30 8 February -1 -13
44 21 March 7 -6
56 33 April 13 0
70 46 May 21 8
79 56 June 26 13
84 60 July 29 16
81 57 August 27 14
74 49 September 24 10
60 37 October 16 3
44 25 November 7 -4
32 17 December 0 -9
57 35 Year 14 1
30-year temperature averages for Wisconsin Dells, 1991 to 2020
High °F Low °F   High °C Low °C
26 8 January -3 -13
31 11 February 0 -12
43 22 March 6 -6
57 33 April 14 1
69 45 May 21 7
79 56 June 26 13
83 60 July 28 15
81 57 August 27 14
73 49 September 23 9
60 37 October 15 3
44 26 November 7 -3
32 15 December 0 -9
57 35 Year 14 2

Days of Hot Weather in Wisconsin Dells

The self-proclaimed "Waterpark Capital of the World" enjoys moderately hot summers. Typically temperatures on half the days peak in the 80s Fahrenheit, while ten days a summer reach into the 90s. Temperatures of 100 degrees (38 °C) or more on average have happened just twice a decade.

Number of days in Wisconsin Dells of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 0 0 0
February 0 0 0
March 1 0 0
April 5 1 0
May 16 6 1
June 26 15 2
July 30 22 4
August 29 19 3
September 20 9 1
October 6 1 0
November 1 0 0
December 0 0 0
Year 133 72 10

How Often Wisconsin Dells Has Cold Temperatures

Freezing temperatures can show up at the Dells in any month but June, July and August. Wisconsin Dells normally has 168 frosty nights a year, with 26 of those dropping to 0 °F or below.

On an average of 63 days annually the thermometer here never rises above freezing. Days that chilly can occur from November to April. For most of January in particular the temperature remains below freezing.

Days per month on average in Wisconsin Dells when the minimum temperature drops to 20, 10 or 0 °F and below
  0 °F
-18 °C
10 °F
-12 °C
20 °F
-8 °C
January 11 17 24
February 8 14 21
March 2 5 14
April 0 0 2
May 0 0 0
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 0 1
November 0 2 9
December 5 11 20
Year 26 49 91
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Wisconsin Temperatures
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