Average Temperatures for Wisconsin in August





Average temperatures for August at cities, communities and lakes throughout Wisconsin are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for each region of the state: Eastern Wisconsin, Southwest Wisconsin, Northern Wisconsin and the Lake Superior Shore.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Eastern Wisconsin

Average August temperatures
High °F Low °F Place High °C Low °C
79 60 Appleton 26 15
78 53 Crivitz, High Falls Flowage 25 12
78 59 Fond du Lac 25 15
79 58 Green Bay 26 15
79 64 Kenosha 26 18
83 61 Lake Geneva 29 16
76 60 Manitowoc 24 16
78 59 Marinette 26 15
80 64 Milwaukee 27 18
80 61 Oshkosh 27 16
77 63 Racine 25 17
80 62 Sheboygan 27 17
77 58 Sturgeon Bay 25 15
75 57 Washington Island 24 14
80 59 Watertown 26 15
80 59 Whitewater 27 15

Southwest Wisconsin

Average daily temperatures in August
High °F Low °F Place High °C Low °C
81 58 Baraboo 27 14
78 58 Beaver Dam 26 15
78 58 Beloit 26 15
83 62 La Crosse 28 17
80 60 Madison 27 15
80 60 Platteville 27 15
81 61 Prairie du Chien 27 16
77 57 Viroqua 25 14
81 57 Wisconsin Dells 27 14
79 56 Wisconsin Rapids 26 14

Northern Wisconsin

August temperatures: daily averages
High °F Low °F Place High °C Low °C
75 55 Drummond 24 13
80 58 Eau Claire 27 14
76 55 Park Falls 24 13
76 53 Rest Lake, Manitowish Waters 24 11
76 53 Rhinelander 24 11
80 56 Rice Lake 26 14
79 56 River Falls 26 14
80 59 St Croix Falls 27 15
78 58 Stevens Point 25 14
78 57 Wausau 26 14
75 54 Willow Reservoir 24 12

Lake Superior Shore

Average August temperatures
High °F Low °F Place High °C Low °C
77 53 Ashland 25 12
76 56 Bayfield 24 14
76 54 Hurley 24 12
76 56 Madeline Island 25 13
75 58 Superior 24 14
Reference

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

Wisconsin Temperatures
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