Indianapolis
Indiana, USA
Long-term weather forecast
Long-term weather forecast

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?

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

What is the average humidity in January in Indianapolis?

In Indianapolis, the average relative humidity in January is 75%.

How many days does it rain in January in Indianapolis?

In Indianapolis, in January, it is raining for 12.1 days, with typically 2.7" (67.6mm) of accumulated precipitation.

How many days does it snow in January in Indianapolis?

In Indianapolis, in January, during 7.5 snowfall days, 8.6" (218.4mm) of snow is typically accumulated.

When does it snow the most in Indianapolis?

January is the month with the most snowfall in Indianapolis, Indiana. Snow falls for 7.5 days and accumulates 8.6" (218.4mm) of snow.

How many hours of daylight does Indianapolis have in January?

The average length of the day in January is 9.7h.

How long on average sun shines in January in Indianapolis?

In January, the average sunshine in Indianapolis is 4.3h.

When is the lowest UV index in Indianapolis?

Months with the lowest UV index are January, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Indianapolis?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in January - Indianapolis, IN
  • Average high temperature in January: 35.6°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 January: 20.5°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 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: 2.7"

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 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: 8.6"

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 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).