October weather forecast and climate
Indianapolis, IN

The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape, and a perfect blue night sky
The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape, and a perfect blue night sky
October lies in the middle of the colorful fall season in Indianapolis, with the temperatures gradually cooling down. The average temperatures in Indianapolis are in the mild 45°F (7.2°C) to 65°F (18.3°C) range but a couple of nights may surprisingly drop below freezing.
The mid-autumn displays peak fall foliage with a brilliant combination of colors, especially in the suburban landscape, where the tree cover is ample. The tourist season dwindles by the end of the month as the daylight decreases to 11 hours and sunlight to 6.5 hours. October gathers 3.1" (78.7mm) of rainfall and the first snowflakes in Indianapolis with misty mornings and cold evenings.

What is the temperature in October in Indianapolis?

In Indianapolis, Indiana, in October, the average high-temperature is 65.3°F (18.5°C), and the average low-temperature is 44.8°F (7.1°C).

How many days does it rain in October in Indianapolis?

In Indianapolis, during October, the rain falls for 8.6 days and regularly aggregates up to 3.1" (79.2mm) of precipitation.

When does it start snowing in Indianapolis?

October is the first month it typically snows. Throughout October, in the average 0.2 snowfall days, it receives 0.4" (10.2mm) of snow.
Average temperature in October - Indianapolis, IN
  • Average high temperature in October: 65.3°F

The warmest month (with the highest average high temperature) is July (85°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in October: 44.7°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average humidity in October - Indianapolis, IN
  • Average humidity in October: 71.6%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is April (65.6%).

Average rainfall in October - Indianapolis, IN
  • Average rainfall in October: 3.1"

The wettest month (with the highest rainfall) is May (5.1").
The driest month (with the lowest rainfall) is February (2.3").

Average rainfall days in October - Indianapolis, IN
  • Average rainfall days in October: 8.6 days

The month with the highest number of rainy days is May (13.1 days).
The month with the lowest number of rainy days is September (8.1 days).

Average snowfall in October - Indianapolis, IN
  • Average snowfall in October: 0.4"

The month with the highest snowfall is January (8.6").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in October - Indianapolis, IN
  • Average snowfall days in October: 0.2 days

The month with the highest number of snowfall days is January (7.5 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight in October / Average sunshine in October - Indianapolis, IN
  • Average daylight in October: 11.1h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in October: 6.3h

The month with most sunshine is June (Average sunshine: 9.6h).
The month with least sunshine is December (Average sunshine: 3.3h).

Average UV index in October - Indianapolis, IN
  • Average UV index in October: 4

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).

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