Oak Lawn Weather in September

September in Oak Lawn brings high temperatures, with daytime highs of 25°C (77°F) and nights around 15°C (59°F). Quite a bit of rainfall is expected, around 92 mm (3.6 in), so pack an umbrella.

Rainfall in Oak Lawn in September

This month experiences about 9 days of rain according to historical data, averaging 92 mm (3.6 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Oak Lawn in September

If you're visiting Oak Lawn in September, expect perfect temperatures with highs of 25°C (77°F) and overnight lows of 15°C (59°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 15°C (59°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Oak Lawn in September

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

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

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• 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 Oak Lawn's climate page.

Oak Lawn Temperature in September

Min Temperature 15°C (59°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 30%  

Precipitation 92 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 Oak Lawn in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Oak Lawn 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 Oak Lawn's climate page.

More climate data for Oak Lawn

Temperature Rainfall Sunshine Humidity

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