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

Is Alton a good destination in August, weather-wise? Here’s a detailed forecast of the month’s weather patterns.

Temperatures

In August, Alton usually has very high temperatures and moderate rainfall. Enjoy the summer season during this month. Anticipate daytime temperatures around 31°C, while night temperatures can drop to 20°C. Keep in mind that temperatures can exceed these averages. Dress for the heat and stay hydrated, especially during peak sun hours.

Precipitation

Alton in August usually receives moderate rainfall, averaging around 77 mm for the month. According to historical climate patterns, there are usually around 8 days days of rain.

Average sunshine

There are approximately 268 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

If you prefer dry days with pleasant temperatures, September and October typically offer the best circumstances. While January, February and December tend to showcase less optimal conditions.

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

 

Alton, monthly averages in August

Min Temperature 20°C  

Max Temperature 31°C  

Chance of Rain 27%  

Precipitation 77 mm  

Rainy days 8 days  

Humidity 70% *  

Sunshine 268 hours *  

Percentage Sunshine 64% *  

Data from: St. Louis, the United States of America (29 KM, 18 Miles).

Where to go in the United States of America in August

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

Weather conditions Weather

Temperatures

Precipitation

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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 this month?

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.

What To Do

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

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Alton.

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 travel conditions. Find out where to go with our weather planner.