Ann Arbor weather in September (Michigan, United States of America)

How does the September weather in Ann Arbor compare to other months? Get all the weather information you need to plan your visit.

Temperatures

For September, the weather in Ann Arbor is generally perfect, featuring high temperatures and moderate rainfall. Expect the temperatures during the day to hover around 24°C. At night, they will likely drop to about 11°C.

Precipitation

Ann Arbor in September usually receives moderate rainfall, averaging around 74 mm for the month. Analyzing past climate data, one can expect approximately 11 days of rain.

Average sunshine

The days are predominantly sunny, with an estimated total of around 232 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.

So this is a great month to visit if you prefer dry days with pleasant temperatures. May, July, August and September typically offer the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Ann Arbor climate page with graphs.

 

Ann Arbor, monthly averages in September

Min Temperature 11°C  

Max Temperature 24°C  

Chance of Rain 36%  

Precipitation 74 mm  

Rainy days 11 days  

Humidity 72% *  

Sunshine 232 hours *  

Percentage Sunshine 61% *  

Data from: Detroit, the United States of America (56 KM, 34 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 Ann Arbor, 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 Ann Arbor.

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.