Typical Weather

Weather in Indianapolis in September

How warm is it in Indianapolis in September?

In September the typical daytime high in Indianapolis is 26.9 °C on average, from 29.0 °C at the start to 24.4 °C at the end of the month.

That is 2.6 °C cooler than in August and 6.7 °C warmer than in October.

The last 10 years were 0.9 °C warmer than more than 40 years ago.

Click a day for more: afternoon and night, the usual range, records and how fast it is warming.

The average of the weather stations Columbus (70 km), Lexington Bluegrass Ap (235 km) and Bowling Green Wwtp (280 km); nearer ones count more.