Weather in Indianapolis in October 2025
Average weather
Average temperature in Indianapolis in October
The temperature in October is +68°F on average, with a range between a maximum of +86°F during the day and a minimum of +27°F at night.
The average maximum temperature goes down 73% by the end of the month, compared with the beginning of the month, from +84°F to +41°F.
Is Indianapolis warm or cold in October?
Indianapolis is typically mild in October.
Maximum temperatures go down compared to the previous month from +77°F to +66°F. The minimum temperature also goes down from +59°F to +46°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how October is compared to other months in Indianapolis:
Climate in Indianapolis in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +77°F | +66°F | +52°F | ||||
| Min. temperature | ||||||
| +32°F | +23°F | +9°F | ||||
| Max. temperature | ||||||
| +99°F | +91°F | +79°F | ||||
| Rainfall | ||||||
| 69 mm | 81 mm | 79 mm | ||||
| Wind | ||||||
| 2 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 72% | 72% | 73% | ||||
| Air pressure | ||||||
| 1016 HPa | 1017 HPa | 1018 HPa | ||||
| Sunny days | ||||||
| 8 | 8 | 5 | ||||
| Cloudy days | ||||||
| 10 | 11 | 13 | ||||
| Rainy days | ||||||
| 10 | 12 | 10 | ||||
| Snowy days | ||||||
| 0 | 0 | 2 | ||||
October weather is still as good as in September. It’s getting colder in October. From +77°F in the day, the average maximum temperature lowers to +66°F. Prepare for more rain. Average rainfall goes from 69 mm to 81 mm. Humidity levels don’t change as the month goes on, averaging around 72%. Winds are stronger in comparison to September, going up from 2 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 8 sunny days during the month.
Next month (November) brings a further decline in the weather.
Wind
The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Indianapolis is gradually increasing during October, going from 2 m/s to 4 m/s over the course of the month.
Rain
How was the weather last October in Indianapolis?
Climate Change Over the Years
The climate in Indianapolis in October has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+59°F) and the highest in 2012 (+67°F). The driest year was 1999 with only 656 mm of rainfall, and the wettest year was 2019 with 1833 mm.
FAQ
Is October a good time to visit Indianapolis?
Can you sunbathe in Indianapolis in October?
Is Indianapolis rainy in October?
Is it sunny in Indianapolis in October?
Other cities in USA
Monthly weather in Indianapolis
Source of the data
For this page, we’ve looked at the typical weather in Indianapolis, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.