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Fall 2023 weather forecast for Indianapolis, IN

Prepare for fall weather in Indy with these seasonal temperature and precipitation outlooks.

Little girl by water with fall foliage in the background

Parke County, IN is a great day trip destination for beautiful views of fall foliage.

Photo via @parkecountyin

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We know the question on your mind, Hoosiers — when’s it going to get cool again?

Thanks to the National Oceanic and Atmospheric Administration’s Climate Prediction Center, we know what temperatures and precipitation trends to expect in our city for September, October, and November.

While exact weather conditions typically can’t be predicted more than a week in advance, here’s a seasonal outlook to help you prepare for what fall will bring.

Reminder: The first day of fall is on Saturday, Sept. 23.

A graphic of the United States with shades of orange indicating above normal temperatures for fall.

Here’s what we can expect this fall.

Graphic via NOAA

🌡️ Temperature

Think average. This fall, Indy has an equal chance of temperatures being higher than normal or lower than normal. The Climate Prediction Center also says a moderate El Niño is likely for this fall — which is when warmer than normal temperatures are in the eastern tropical Pacific Ocean. So, we’ll see how this pans out for central Indiana.

🌨️ Precipitation

Expect average precipitation. Indy has an equal chance of seeing above or below normal rainfall amounts this fall.

☀️ Drought

Drought conditions are expected to likely develop for much of central Indiana this season.


September typically brings a welcoming transition from the heat of summer to the cool of autumn in Indy. While temperatures historically remain high at about 75.9°F, there’s a decrease towards the end of the month.

You’ll also notice the city gets darker earlier as the days shorten, bringing a clear change in pace from the lingering summer daylight — a good reminder to start cozying up indoors or gathering around a bonfire.


For some of us, October is the official start of fall because it typically carries the essence of autumn + you really start to see and feel the temperature change — an intermediate period between the warm summer and brisk winter. As temperatures moderate, falling to an average low of 47.3°F, we’ll get a refreshing chill after a very hot summer.


Make sure you dress in layers. Indy in November usually brings a significant drop in temperature, bracing for the upcoming winter. With the mercury dropping to an average low of 36.1°F, the city dons its winter attire + a sense of anticipation for the impending holiday season.

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