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Saint Charles weather in July (Illinois, United States of America)

How is the weather in Saint Charles in July? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In July, Saint Charles typically experiences high temperatures and high rainfall. July is a summer month. Daytime temperatures hover around 29°C, while nights can cool down to about 17°C. Often, it stands out as the year's warmest month. With this in mind, cool breathable fabrics will make navigating the heat much more bearable. Always be ready to embrace the warmth while staying cool and protected.

Saint Charles in July usually receives high rainfall, averaging around 111 mm for the month. When we look at the climate data from the last 30 years, we can expect around 11 days of rain.

The city usually sees around 319 hours of sunlight, indicating many sunny days.

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

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

 

Saint Charles, monthly averages in July

Min TemperatureMin Temperature 17°C  
Max TemperatureMax Temperature 29°C  
Chance of RainChance of Rain 37%  
PrecipitationPrecipitation 111 mm  
Rainy daysRainy days 11 days  
HumidityHumidity 68% *  
SunshineSunshine 319 hours *  
Percentage SunshinePercentage Sunshine 69% *  
* Data from: Chicago, the United States of America (34 KM, 21 Miles).

Where to go in the United States of America in July

Find out more about the weather in the United States of America in July 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 Saint Charles in July?

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 July.

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

Interested in more climate information?

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

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.