Wisconsin

Wisconsin Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Wisconsin, the United States of America in August.

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Lake Geneva Brookfield Oak Creek Pleasant Prairie

Thinking about venturing to Wisconsin, the United States of America this August and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Wisconsin in August

Wisconsin, the United States of America is a region in the United States of America. August in Wisconsin generally has warm temperatures, with precipitation levels ranging from moderate to high. During August, summer is in full swing.

Temperatures

The average maximum temperatures are warm and range from 24°C (75°F) in Minocqua to 28°C (82°F) in Onalaska. Nighttime temperatures generally drop to 17°C (63°F) in Onalaska and 12°C (54°F) in Minocqua.

To explore the conditions in Wisconsin, the United States of America in more detail, check the map below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Two Rivers with an average of 67 mm (2.6 in) to high rainfall in Baldwin with 145 mm (5.7 in).

Average sunshine

August brings good sunshine to many areas. Lake Geneva sees around 282 hours of sunlight, great for visitors looking for bright days.

Explore Wisconsin by month

Pick a month to see the average temperature, rainfall and sunshine in Wisconsin — and find the best time to visit. (based on Lake Geneva)

January-2°C (28°F) February-2°C (28°F) March7°C (45°F) April14°C (57°F) May21°C (70°F) June26°C (79°F) This monthJuly28°C (82°F) August27°C (81°F) September23°C (73°F) October16°C (61°F) November8°C (46°F) December1°C (34°F)
Best Time to Visit Wisconsin →

Best Places to Visit in Wisconsin in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Wisconsin.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Wisconsin

What is the weather like in August for some of the most popular destinations in Wisconsin, the United States of America?

Temperature range in Wisconsin (August)

Precipitation variation in Wisconsin (August)

Lake Geneva

In August Lake Geneva generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 15°C (59°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« July
August
September »
July
August
September
Max temperature
28°C (82°F)
27°C (81°F)
23°C (73°F)
Min temperature
16°C (61°F)
15°C (59°F)
11°C (52°F)
Monthly sun hours
319 hours
282 hours
216 hours
Monthly rainfall
97 mm (3.8 in)
103 mm (4.1 in)
85 mm (3.3 in)
Monthly rainy days
10 days
11 days
10 days
Weather conditions
perfect
pleasant
perfect
Climate in Lake Geneva →

Brookfield

In August Brookfield generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 16°C (61°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
28°C (82°F)
27°C (81°F)
23°C (73°F)
Min temperature
16°C (61°F)
16°C (61°F)
11°C (52°F)
Monthly sun hours
319 hours
282 hours
216 hours
Monthly rainfall
98 mm (3.9 in)
91 mm (3.6 in)
84 mm (3.3 in)
Monthly rainy days
9 days
10 days
10 days
Weather conditions
perfect
perfect
perfect
Climate in Brookfield →

Oak Creek

In August Oak Creek generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 18°C (64°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
27°C (81°F)
26°C (79°F)
23°C (73°F)
Min temperature
18°C (64°F)
18°C (64°F)
13°C (55°F)
Monthly sun hours
319 hours
282 hours
216 hours
Monthly rainfall
89 mm (3.5 in)
91 mm (3.6 in)
75 mm (3 in)
Monthly rainy days
9 days
11 days
10 days
Weather conditions
perfect
perfect
perfect
Climate in Oak Creek →

Pleasant Prairie

In August Pleasant Prairie generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 16°C (61°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« July
August
September »
July
August
September
Max temperature
28°C (82°F)
27°C (81°F)
23°C (73°F)
Min temperature
16°C (61°F)
16°C (61°F)
12°C (54°F)
Monthly sun hours
319 hours
282 hours
216 hours
Monthly rainfall
97 mm (3.8 in)
88 mm (3.5 in)
89 mm (3.5 in)
Monthly rainy days
10 days
11 days
10 days
Weather conditions
perfect
perfect
perfect
Climate in Pleasant Prairie →

Janesville

In August Janesville generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 16°C (61°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« July
August
September »
July
August
September
Max temperature
28°C (82°F)
27°C (81°F)
24°C (75°F)
Min temperature
16°C (61°F)
16°C (61°F)
11°C (52°F)
Monthly sun hours
308 hours
272 hours
212 hours
Monthly rainfall
99 mm (3.9 in)
136 mm (5.4 in)
79 mm (3.1 in)
Monthly rainy days
10 days
11 days
9 days
Weather conditions
perfect
pleasant
perfect
Climate in Janesville →

Is your destination not in the list? Have a look at all destinations in Wisconsin, in the United States of America.

Popular cities in August

Day & night temperatures, rainfall and average weather in Wisconsin in August.

City Weather Day temp Night temp Rainfall
Lake Geneva 27°C (81°F) 15°C (59°F) 103 mm (4.1 in)
Brookfield 27°C (81°F) 16°C (61°F) 91 mm (3.6 in)
Oak Creek 26°C (79°F) 18°C (64°F) 91 mm (3.6 in)
Pleasant Prairie 27°C (81°F) 16°C (61°F) 88 mm (3.5 in)
Janesville 27°C (81°F) 16°C (61°F) 136 mm (5.4 in)
Racine 26°C (79°F) 18°C (64°F) 93 mm (3.7 in)

Wisconsin weather in August: frequently asked questions

What is the weather like in Wisconsin, the United States of America in August?

August in Wisconsin, the United States of America brings pleasant weather. In Lake Geneva, daytime temperatures are typically around 27°C (81°F) and nighttime lows hover near 15°C (59°F).

What is the average temperature in Wisconsin, the United States of America in August?

Average temperatures in Wisconsin, the United States of America during August range from a nighttime low near 15°C (59°F) to a daytime high around 27°C (81°F) in Lake Geneva.

Does Wisconsin, the United States of America get a lot of rain in August?

Wisconsin, the United States of America sees substantial rainfall in August. Lake Geneva typically averages about 103 mm (4.1 in), a mix of wet and dry days, but bring an umbrella.

Is August a Good Time to Visit Wisconsin, the United States of America?

Given the typically pleasant weather conditions in Lake Geneva, August might be a good time to visit Wisconsin, the United States of America.

On average, the best time to visit Wisconsin, the United States of America is in May, July and September with generally perfect weather in Lake Geneva. On the other hand, the months of January, February, March, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Wisconsin.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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