Jacksonville weather in September (Illinois, United States of America)

What kind of weather does September bring to Jacksonville? Here’s a detailed forecast of the month’s weather patterns.

Temperatures

Typically, September in Jacksonville includes high temperatures and high rainfall. In the daytime, temperatures tend to hover near 27°C, cooling down at night to around 13°C.

Precipitation

Jacksonville in September usually receives high rainfall, averaging around 104 mm for the month. Climate statistics over the past 30 years suggest around 9 days of rain.

Average sunshine

The days are predominantly sunny, with an estimated total of around 248 hours of sunshine. These sun-filled days are perfect for spending time outside. Whether it's playing sports, visiting a park, or going for a bike ride.

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 Jacksonville climate page with graphs.

 

Jacksonville, monthly averages in September

Min Temperature 13°C  

Max Temperature 27°C  

Chance of Rain 30%  

Precipitation 104 mm  

Rainy days 9 days  

Humidity 72% *  

Sunshine 248 hours *  

Percentage Sunshine 66% *  

Data from: Springfield, the United States of America (50 KM, 31 Miles).

Where to go in the United States of America in September

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. 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.

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 Jacksonville.

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.