January 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
January, the same as December, is a wintry winter month in Indianapolis, Indiana, with temperature in the range of an average low of 21°F (-6.1°C) and an average high of 33.4°F (0.8°C).

Temperature

With an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21°F (-6.1°C), January is the coldest month.

Humidity

In January, the average relative humidity is 81%.

Rainfall

In Indianapolis, in January, it is raining for 7.2 days, with typically 1.38" (35mm) of accumulated precipitation. Throughout the year, in Indianapolis, Indiana, there are 146.4 rainfall days, and 21.14" (537mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Indianapolis are January through April, November and December. In Indianapolis, Indiana, in January, snow falls for 7.9 days, with typically accumulated 1.73" (44mm) of snow. Throughout the year, in Indianapolis, Indiana, there are 28.1 snowfall days, and 7.87" (200mm) of snow is accumulated.

Daylight

In January, the average length of the day in Indianapolis is 9.7h.

Sunshine

The month with the least sunshine in Indianapolis is January, with an average of 4.1h of sunshine.

UV index

Months with the lowest UV index in Indianapolis, Indiana, are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in January transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Indianapolis?

With an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21°F (-6.1°C), January is the coldest month in Indianapolis.

What is the temperature in January in Indianapolis?

In January, in Indianapolis, Indiana, the average high-temperature is 33.4°F (0.8°C), and the average low-temperature is 21°F (-6.1°C).

What is the average humidity in January in Indianapolis?

In January, the average relative humidity is 81%.

How much does it rain in Indianapolis in January?

In Indianapolis, Indiana, in January, it is raining for 7.2 days, with typically 1.38" (35mm) of accumulated precipitation.

How much does it snow in Indianapolis in January?

In January, it is snowing for 7.9 days. Throughout January, 1.73" (44mm) of snow is accumulated.

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

In Indianapolis, Indiana, the average length of the day in January is 9.7h.

What is the month with the least sunshine in Indianapolis?

January has the least sunshine of the year, with an average of 4.1h of sunshine.

How long on average sun shines in January in Indianapolis?

In January, the average sunshine in Indianapolis, Indiana, is 4.1h.

When is the lowest UV index in Indianapolis?

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

What is the UV index reading in January in Indianapolis?

In Indianapolis, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in January - Indianapolis, IN
  • Average high temperature in January: 33.4°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 January: 21°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 January - Indianapolis, IN
  • Average pressure in January: 30.14"

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 January - Indianapolis, IN
  • Average wind speed in January: 9.8mph

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 January - Indianapolis, IN
  • Average humidity in January: 81%

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

Average rainfall in January - Indianapolis, IN
  • Average rainfall in January: 1.38"

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 January - Indianapolis, IN
  • Average rainfall days in January: 7.2 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 January - Indianapolis, IN
  • Average snowfall in January: 1.73"

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 January - Indianapolis, IN
  • Average snowfall days in January: 7.9 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 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 the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in January: 4.1h

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 January - Indianapolis, IN
  • Average sunshine days in January: 16.3 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 January - Indianapolis, IN
  • Average UV index in January: 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 January - Indianapolis, IN
  • Average cloud cover in January: 59

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 January - Indianapolis, IN
  • Average visibility in January: 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).