Westmont Weather in September

Westmont in September sees high temperatures, with highs around 25°C (77°F) and overnight lows of 13°C (55°F). Rainfall is fairly high at around 86 mm (3.4 in) on average, so pack waterproofs just in case.

Rainfall in Westmont in September

Typically, you can expect about 11 days of rain this month, with 86 mm (3.4 in) on average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Westmont in September

Westmont in September has excellent weather. Days reach 25°C (77°F) and nights cool to 13°C (55°F). This kind of day-to-night contrast is typical for this time of year. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Westmont in September

Enjoy a sunny month with about 226 hours of sunshine, the clear skies make Westmont even more beautiful.

Wind Speed in Westmont in September

In September, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• 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 Westmont's climate page.

Westmont Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 36%  

Precipitation 86 mm (3.4 in)  

Rainy days 11 days  

Humidity 71% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 226 hours *  

Percentage Sunshine 60% *  

* Data from: Chicago, the United States of America (21 KM, 13 Miles).

What to Wear in Westmont in September

For Westmont 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 Westmont 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 Westmont's climate page.

More climate data for Westmont

Temperature Rainfall Sunshine Humidity Wind Speed

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