Indiana Weather in September

With daytime temperatures of 24°C (75°F) and nighttime lows of 12°C (54°F), September in Indiana brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 98 mm (3.9 in) falls on average.

Rainfall in Indiana in September

Rain is expected on roughly 13 days, totalling around 98 mm (3.9 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 Indiana in September

If you're visiting Indiana in September, expect excellent temperatures with highs of 24°C (75°F) and overnight lows of 12°C (54°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 12°C (54°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.

If your ideal day consists of dry skies and pleasant temperatures, September typically offers the best circumstances for Indiana.

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 Indiana's climate page.

Indiana Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 43%  

Precipitation 98 mm (3.9 in)  

Rainy days 13 days  

What to Wear in Indiana 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.

What To Do in Indiana in September

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

Cycling

9/10

Walking

9/10

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 Indiana's climate page.

More climate data for Indiana

Temperature Rainfall

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