Lemont Weather in September

September is one of the excellent months to visit Lemont, with daytime temperatures of 25°C (77°F) and lows of 13°C (55°F) at night. Do note that quite a bit of rainfall is typical, averaging around 83 mm (3.3 in).

Rainfall in Lemont in September

The climate data from previous years indicates about 9 days of rain, averaging 83 mm (3.3 in) for the month. 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 Lemont in September

September in Lemont is generally excellent, with days reaching 25°C (77°F) and nights settling around 13°C (55°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 13°C (55°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 Lemont in September

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

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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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 Lemont's climate page.

Lemont Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 30%  

Precipitation 83 mm (3.3 in)  

Rainy days 9 days  

Humidity 71% *  

Sunshine 226 hours *  

Percentage Sunshine 60% *  

* Data from: Chicago, the United States of America (35 KM, 22 Miles).

What to Wear in Lemont in September

For Lemont 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. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Lemont 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 Lemont's climate page.

More climate data for Lemont

Temperature Rainfall Sunshine Humidity

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