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

Wondering what the weather is like in Freeport during September? Our guide gives you the essential weather details for this month.

Temperatures

Expect perfect weather in Freeport during September, which means high temperatures and moderate rainfall. Expect temperatures to climb to 24°C during the day, with nighttime readings dropping to 11°C.

Precipitation

Freeport in September usually receives moderate rainfall, averaging around 70 mm for the month. When we look at the climate data from the last 30 years, you can expect around 9 days of rain.

Average sunshine

There are approximately 221 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Freeport. May and September typically offer 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 Freeport climate page with graphs.

 

Freeport, monthly averages in September

Min Temperature 11°C  

Max Temperature 24°C  

Chance of Rain 30%  

Precipitation 70 mm  

Rainy days 9 days  

Sunshine 221 hours *  

Percentage Sunshine *  

Data from: Galena, the United States of America (67 KM, 42 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?

For visitors traveling to Freeport, 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.

Swimming

9/10

Cycling

10/10

Walking

10/10

Barbeque

8/10

Camping

8/10

Outdoor sports

10/10

Interested in more climate information?

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

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.