Indianapolis Weather in October
October in Indianapolis sees daytime temperatures around 18°C (64°F) and lows of 7°C (45°F) at night. With around 90 mm (3.5 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Indianapolis in October
Typically, you can expect about 11 days of rain this month, with 90 mm (3.5 in) on average. 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 Indianapolis in October
October in Indianapolis sees highs of 18°C (64°F) and lows of 7°C (45°F) overnight. Conditions are often most pleasant around the middle of the day. Nights fall to 7°C (45°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Indianapolis in October
Expect sunny days throughout the month, with an estimated 200 hours of sunshine. This makes it a pleasant time to visit Indianapolis.For Indianapolis itself, August and September generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Indianapolis's climate page.
Indianapolis Temperature in October
Min Temperature
7°C (45°F)
Max Temperature
18°C (64°F)
Chance of Rain
37%
Precipitation
90 mm (3.5 in)
Rainy days
11 days
Humidity
72%
Sunshine
200 hours
Percentage Sunshine
58%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Indianapolis typically drop from around 22°C (72°F) at the start of October to approximately 16°C (61°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 11°C (52°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather for Indianapolis in October
Browse day-by-day weather records for Indianapolis spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Indianapolis historical weather extremes in October
According to our 49 years of weather records for Indianapolis, the following extremes were recorded between 1976 and 2025.
- On October 1, 2019, temperatures climbed to 32°C (90°F), marking the warmest October day on record.
- The lowest overnight temperature recorded in October was -6°C (21°F) (October 24, 1981).
Best Places in the United States of America in October
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →
perfect weather
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tolerable
unpleasant
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What to Wear in Indianapolis in October
Pleasant temperatures in October 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. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Indianapolis in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Indianapolis's climate page.
Temperature Rainfall Sunshine Humidity
See the full Indianapolis climate overview or explore weather in the United States of America.
