January weather forecast
Indianapolis, IN

The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape
The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape

Weather in January

January, the same as December, is a wintry winter month in Indianapolis, Indiana, with an average temperature ranging between min 21°F (-6.1°C) and max 33.4°F (0.8°C).

Temperature

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

Humidity

In Indianapolis, Indiana, the average relative humidity in January is 81%.

Rainfall

In January, the rain falls for 7.2 days. Throughout January, 1.38" (35mm) of precipitation is accumulated. In Indianapolis, during the entire year, the rain falls for 146.4 days and collects up to 21.14" (537mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Indianapolis, during 7.9 snowfall days, 1.73" (44mm) of snow is typically accumulated. 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 is 9h and 44min.
On the first day of the month, sunrise is at 8:05 am and sunset at 5:30 pm. On the last day of January, in Indianapolis, Indiana, sunrise is at 7:53 am and sunset at 6:03 pm EST.

Sunshine

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

UV index

The 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 of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 2 in January transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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.
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FAQ

What is the coldest month in Indianapolis?

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

What is the average humidity in January in Indianapolis?

In Indianapolis, the average relative humidity in January is 81%.

How many days does it rain in January in Indianapolis?

In Indianapolis, Indiana, in January, during 7.2 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.

How many days does it snow in January in Indianapolis?

In Indianapolis, Indiana, during January, snow falls for 7.9 days and regularly aggregates up to 1.73" (44mm) of snow.

How many hours of daylight does Indianapolis have in January?

The average day length in January is 9h and 44min.

What time are sunrise and sunset in January in Indianapolis?

In January, on the first day of the month, sunrise is at 8:05 am and sunset at 5:30 pm. On the last day of the month, in Indianapolis, Indiana, sunrise is at 7:53 am and sunset at 6:03 pm EST.

What is the month with the least sunshine in Indianapolis?

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

How many hours of sunshine does Indianapolis have in January?

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

What are the months with the lowest UV index in Indianapolis?

The 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 January in Indianapolis?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Indianapolis, IN

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).

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Average pressure in January
Indianapolis, IN

Average pressure in January - Indianapolis, IN
  • Average pressure in January: 30.14"Hg

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

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Average wind speed in January
Indianapolis, IN

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).

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Average humidity in January
Indianapolis, IN

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%).

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Average rainfall in January
Indianapolis, IN

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").

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Average rainfall days in January
Indianapolis, IN

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).

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Average snowfall in January
Indianapolis, IN

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

The month with the highest snowfall is December (2.28").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Indianapolis, IN

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).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Indianapolis, IN

Average daylight in January / Average sunshine in January - Indianapolis, IN
  • Average daylight in January: 9h and 44min

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

  • Average sunshine in January: 4h and 6min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in January
Indianapolis, IN

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).

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Average UV index in January
Indianapolis, IN

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

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

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Average cloud cover in January
Indianapolis, IN

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).

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Average visibility in January
Indianapolis, IN

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

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

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