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Chicago weather in August (Illinois, United States of America)

Looking to travel to Chicago in August? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In August, Chicago generally has high temperatures and high rainfall. August is a summer month. Daytime temperatures hover around 28°C, while nights can cool down to about 18°C.

Chicago in August usually receives high rainfall, averaging around 115 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 11 days of the month will see rainfall.

With around 280 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

Should you favor a climate that's both dry and comfortably warm September typically offers the most agreeable circumstances. On the other hand, January, February, March, November and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Chicago climate page with graphs.

 

Chicago, monthly averages in August

Min TemperatureMin Temperature 18°C  
Max TemperatureMax Temperature 28°C  
Chance of RainChance of Rain 37%  
PrecipitationPrecipitation 115 mm  
Rainy daysRainy days 11 days  
HumidityHumidity 71%  
WindspeedWindspeed 14 km/h  
SunshineSunshine 280 hours  
Percentage SunshinePercentage Sunshine 66%  

Where to go in the United States of America in August

Find out more about the weather in the United States of America in August and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Chicago in August?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in August.

Swimming
9/10
Cycling
7/10
Walking
7/10
Camping
6/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Chicago.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find 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 climate conditions. Find out where to go with our weather planner.