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

Wondering what the weather is like in O'Fallon during October? Wondering about the weather this month? Our guide has all the details you need.

Temperatures

You’ll find the weather in O'Fallon during October to be perfect, with pleasant temperatures and moderate rainfall. During the day, temperatures usually reach up to 21°C. At night, they tend to fall to approximately 8°C.

Precipitation

O'Fallon in October usually receives moderate rainfall, averaging around 86 mm for the month. Historically, approximately 9 days this month are expected to have rain.

Average sunshine

With around 206 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

So this is a great month to visit if you prefer dry days with pleasant temperatures. October typically offers the most optimal weather. In contrast, January, February and December tend to have less optimal conditions.

Need inspiration to choose your next destination? Our innovative weather planner helps you discover the perfect getaway tailored to your ideal climate conditions.

 

O'Fallon, monthly averages in October

Min Temperature 8°C  

Max Temperature 21°C  

Chance of Rain 30%  

Precipitation 86 mm  

Rainy days 9 days  

Humidity 68% *  

Sunshine 206 hours *  

Percentage Sunshine 60% *  

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

Where to go in the United States of America in October

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

Barbeque

8/10

Camping

4/10

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.