O'Fallon weather in April (Illinois, United States of America)

Wondering what the weather is like in O'Fallon during April? See what weather conditions to anticipate this month with our guide.

Temperatures

During April, O'Fallon usually has pleasant temperatures and high rainfall. During the day, temperatures usually reach up to 20°C. At night, they tend to fall to approximately 8°C.

Precipitation

O'Fallon in April usually receives high rainfall, averaging around 136 mm for the month. Based on our climate data of the past 30 years, about 11 days of rain are anticipated.

Average sunshine

There are approximately 225 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

Should you favor a climate that's both dry and comfortably warm October typically offers the most agreeable circumstances. On the other hand, January, February 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 O'Fallon climate page with graphs.

 

O'Fallon, monthly averages in April

Min Temperature 8°C  

Max Temperature 20°C  

Chance of Rain 37%  

Precipitation 136 mm  

Rainy days 11 days  

Humidity 63% *  

Sunshine 225 hours *  

Percentage Sunshine 56% *  

Data from: St. Louis, the United States of America (25 KM, 15 Miles).

Where to go in the United States of America in April

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 O'Fallon, 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 O'Fallon.

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.