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

Curious about the climate in Saint Charles this May? Wondering about the weather this month? Our guide has all the details you need.

Temperatures

The month of May in Saint Charles typically brings pleasant temperatures and high rainfall. The daytime often sees temperatures reaching 22°C, but nighttime brings a cool-down to 10°C.

Precipitation

Saint Charles in May usually receives high rainfall, averaging around 111 mm for the month. Looking at the last 30 years, the data shows about 12 days with rain.

Average sunshine

With around 282 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

In case you lean more towards enjoying temperate temperatures and rain-free days September typically offers the most optimal weather. In contrast, January, February, March, November and December tend to have 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 May

Min Temperature 10°C  

Max Temperature 22°C  

Chance of Rain 40%  

Precipitation 111 mm  

Rainy days 12 days  

Humidity 64% *  

Sunshine 282 hours *  

Percentage Sunshine 62% *  

Data from: Chicago, the United States of America (34 KM, 21 Miles).

Where to go in the United States of America in May

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?

For visitors traveling to Saint Charles, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Cycling

9/10

Walking

9/10

Camping

3/10

Outdoor sports

9/10

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