Edwardsville Weather in September

Edwardsville in September sees high temperatures, with highs around 27°C (81°F) and overnight lows of 15°C (59°F). Rainfall is fairly high at around 94 mm (3.7 in) on average, so pack waterproofs just in case.

Rainfall in Edwardsville in September

Historically, approximately 10 days this month are expected to have rain, averaging 94 mm (3.7 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Edwardsville in September

September is one of the better months to visit Edwardsville. Expect 27°C (81°F) during the day and 15°C (59°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 15°C (59°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 Edwardsville in September

Expect sunny days throughout the month, with an estimated 235 hours of sunshine. This makes it a pleasant time to visit Edwardsville.

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

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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 Edwardsville's climate page.

Edwardsville Temperature in September

Min Temperature 15°C (59°F)  

Max Temperature 27°C (81°F)  

Chance of Rain 32%  

Precipitation 94 mm (3.7 in)  

Rainy days 10 days  

Humidity 71% *  

Sunshine 235 hours *  

Percentage Sunshine 63% *  

* Data from: St. Louis, the United States of America (29 KM, 18 Miles).

What to Wear in Edwardsville in September

Warm but pleasant conditions in Edwardsville in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Edwardsville in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

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 Edwardsville's climate page.

More climate data for Edwardsville

Temperature Rainfall Sunshine Humidity

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