October weather forecast and climate
Indianapolis, IN

The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape
The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape
October, like September, in Indianapolis, Indiana, is another enjoyable autumn month, with average temperature varying between 63.1°F (17.3°C) and 47.3°F (8.5°C).

Temperature

In Indianapolis, the average high-temperature in October decreases, from a warm 75.9°F (24.4°C) in September, to a comfortable 63.1°F (17.3°C). The average low-temperature, in October, is 47.3°F (8.5°C).

Humidity

With an average relative humidity of 73%, October is the least humid month in Indianapolis.

Rainfall

In Indianapolis, during October, the rain falls for 11.1 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 146.4 rainfall days, and 21.14" (537mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Indianapolis, Indiana.

Daylight

The average length of the day in Indianapolis is 11.1h.

Sunshine

In October, the average sunshine in Indianapolis is 6.8h.

UV index

Months with the lowest UV index in Indianapolis are January, February, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 in October interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in October in Indianapolis?

The average high-temperature, in October, in Indianapolis, Indiana, is 63.1°F (17.3°C), while the average low-temperature is 47.3°F (8.5°C).

What is the least humid month in Indianapolis?

The least humid month in Indianapolis is October, with an average relative humidity of 73%.

What is the average humidity in October in Indianapolis?

In October, the average relative humidity is 73%.

How many days does it rain in October in Indianapolis?

In Indianapolis, Indiana, in October, it is raining for 11.1 days, with typically 1.46" (37mm) of accumulated precipitation.

Does it snow in Indianapolis in October?

In Indianapolis, in October, it doesn't snow. In November, it regularly snows.

When it does not snow in Indianapolis?

May through October are months without snowfall in Indianapolis, Indiana.

What is the average length of the day in October in Indianapolis?

In October, the average length of the day in Indianapolis is 11.1h.

How many hours of sunshine does Indianapolis have in October?

The average sunshine in October is 6.8h.

When is the lowest UV index in Indianapolis?

Months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2.

What is the UV index reading in October in Indianapolis?

The average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a low health threat from the exposure to the Sun's UV radiation.
Average temperature in October - Indianapolis, IN
  • Average high temperature in October: 63.1°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in October: 47.3°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in October - Indianapolis, IN
  • Average pressure in October: 30.03"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed in October - Indianapolis, IN
  • Average wind speed in October: 8.4mph

The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in October - Indianapolis, IN
  • Average humidity in October: 73%

The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (73%).

Average rainfall in October - Indianapolis, IN
  • Average rainfall in October: 1.46"

The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (1.22").

Average rainfall days in October - Indianapolis, IN
  • Average rainfall days in October: 11.1 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (6.8 days).

Average snowfall in October - Indianapolis, IN
  • Average snowfall in October: 0"

The month with the highest snowfall is December (2.28").
Months with the least snowfall are May, June, July, August, September and October (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 (7.9 days).
Months with the least snowfall days are 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 the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in October: 6.8h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is January (Average sunshine: 4.1h).

Average sunshine days in October - Indianapolis, IN
  • Average sunshine days in October: 18.6 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (11.1 days).

Average UV index in October - Indianapolis, IN
  • Average UV index in October: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in October - Indianapolis, IN
  • Average cloud cover in October: 36

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in October - Indianapolis, IN
  • Average visibility in October: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).