Mount Prospect weather in September (Illinois, United States of America)

What kind of weather does September bring to Mount Prospect? Explore our page to find a thorough overview of this month's weather conditions.

Temperatures

For September, the weather in Mount Prospect is generally perfect, featuring high temperatures and moderate rainfall. Expect temperatures to climb to 24°C during the day, with nighttime readings dropping to 13°C.

Precipitation

Mount Prospect in September usually receives moderate rainfall, averaging around 99 mm for the month. Climate statistics over the past 30 years suggest around 9 days of rain.

Average sunshine

The city usually sees around 226 hours of sunlight, indicating many sunny days.

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

 

Mount Prospect, monthly averages in September

Min Temperature 13°C  

Max Temperature 24°C  

Chance of Rain 30%  

Precipitation 99 mm  

Rainy days 9 days  

Humidity 71% *  

Windspeed 14 km/h *  

Sunshine 226 hours *  

Percentage Sunshine 60% *  

* Data from: Chicago, the United States of America (9 KM, 6 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 Mount Prospect, 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

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

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

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.