January 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
January is usually the coldest month of the year in Indianapolis with the average temperatures in the cold zone of 19.9°F (-6.7°C) to 36°F (2.2°C).
The snowiest month registers 9" (228.6mm) of snowfall with icy precipitation to the tune of 2.7" (68.6mm). The skies tend to be cloudy with the constant onslaught of rain, snow, and frost that keep the sun on the horizon for hardly 4.5 hours a day.
The period around New Year is usually the chilliest time of the year but has many offerings, including ice skating, music concerts, indoor games, and shopping at the many malls in Indianapolis.

What is the coldest month in Indianapolis?

The coldest month in Indianapolis, Indiana, is January, with an average high-temperature of 35.6°F (2°C) and an average low-temperature of 20.5°F (-6.4°C).

What is the temperature in January in Indianapolis?

In Indianapolis, Indiana, in January, the average high-temperature is 35.6°F (2°C), and the average low-temperature is 20.5°F (-6.4°C).

How many days does it rain in January in Indianapolis?

In Indianapolis, during January, the rain falls for 12.1 days and regularly aggregates up to 2.7" (67.6mm) of precipitation.

How many days does it snow in January in Indianapolis?

In Indianapolis, Indiana, in January, snow falls for 7.5 days, with typically accumulated 8.6" (218.4mm) of snow.

What is the snowiest month in Indianapolis?

The month with the most snowfall in Indianapolis, Indiana, is January when snow falls for 7.5 days and typically aggregates up to 8.6" (218.4mm) of snow.
Average temperature in January - Indianapolis, IN
  • Average high temperature in January: 2°C

The warmest month (with the highest average high temperature) is July (29.4°C).
The month with the lowest average high temperature is January (2°C).

  • Average low temperature in January: -6.4°C

The month with the highest average low temperature is July (18.8°C).
The coldest month (with the lowest average low temperature) is January (-6.4°C).

Average humidity in January - Indianapolis, IN
  • Average humidity in January: 75%

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

Average rainfall in January - Indianapolis, IN
  • Average rainfall in January: 67.6mm

The wettest month (with the highest rainfall) is May (128.3mm).
The driest month (with the lowest rainfall) is February (58.9mm).

Average rainfall days in January - Indianapolis, IN
  • Average rainfall days in January: 12.1 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 January - Indianapolis, IN
  • Average snowfall in January: 218.4mm

The month with the highest snowfall is January (218.4mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days in January - Indianapolis, IN
  • Average snowfall days in January: 7.5 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 January / Average sunshine in January - Indianapolis, IN
  • Average daylight in January: 9.7h

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 January: 4.3h

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

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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