Glen Ellyn Weather in September

September in Glen Ellyn averages 24°C (75°F) during the day and 12°C (54°F) at night. Quite a bit of rainfall is typical this month, with around 93 mm (3.7 in) on average. An umbrella is a good idea.

Rainfall in Glen Ellyn in September

Past climate data indicates that roughly 8 days will see rain, totalling around 93 mm (3.7 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Glen Ellyn in September

The perfect temperature in Glen Ellyn in September makes it a solid month to visit, with 24°C (75°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. At 12°C (54°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Glen Ellyn in September

The month enjoys around 226 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in Glen Ellyn in September

September sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

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

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• January
• February
• March
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• May
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• September
• October
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• December

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

Glen Ellyn Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 28%  

Precipitation 93 mm (3.7 in)  

Rainy days 8 days  

Humidity 71% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 226 hours *  

Percentage Sunshine 60% *  

* Data from: Chicago, the United States of America (18 KM, 11 Miles).

What to Wear in Glen Ellyn in September

For Glen Ellyn 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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Glen Ellyn 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 Glen Ellyn's climate page.

More climate data for Glen Ellyn

Temperature Rainfall Sunshine Humidity Wind Speed

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