Mundelein Weather in September

September in Mundelein sees daytime temperatures around 23°C (73°F) and lows of 12°C (54°F) at night. With around 91 mm (3.6 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Mundelein in September

Historically, the month has about 9 days of rain, averaging 91 mm (3.6 in) in total. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Mundelein in September

Mundelein in September is worth a visit. The temperature is excellent, with 23°C (73°F) during the day and 12°C (54°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Mundelein in September

Expect sunny days throughout the month, with an estimated 226 hours of sunshine. This makes it a pleasant time to visit Mundelein.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Mundelein.

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• January
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For a detailed overview over the year and the best time to visit the United States of America, check out our Mundelein's climate page.

Mundelein Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 30%  

Precipitation 91 mm (3.6 in)  

Rainy days 9 days  

Humidity 71% *  

Sunshine 226 hours *  

Percentage Sunshine 60% *  

* Data from: Chicago, the United States of America (32 KM, 20 Miles).

What to Wear in Mundelein in September

For Mundelein in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Mundelein in September

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

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Mundelein's climate page.

More climate data for Mundelein

Temperature Rainfall Sunshine Humidity

See the full Mundelein climate overview or explore weather in the United States of America.