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

Temperature

The coldest month is January, 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, the average relative humidity is 81%.

Rainfall

In January, in Indianapolis, 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, in January, 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

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

Sunshine

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

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 value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

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.

What is the temperature in January in Indianapolis?

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

How much does it rain in Indianapolis in January?

In January, in Indianapolis, the rain falls for 7.2 days. Throughout January, 1.38" (35mm) of precipitation is accumulated.

How much does it snow in Indianapolis in January?

In Indianapolis, Indiana, in January, snow falls for 7.9 days, with typically accumulated 1.73" (44mm) of snow.

How many hours of daylight does Indianapolis have in January?

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

What is the month with the least sunshine in Indianapolis?

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

How long on average sun shines in January in Indianapolis?

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

What is the month with the lowest UV index in Indianapolis?

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

What is the UV index intensity in January in Indianapolis?

In Indianapolis, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV rays.
Average temperature in January - Indianapolis, IN
  • Average high temperature in January: 0.8°C

The warmest month (with the highest average high temperature) is July (27.8°C).
The month with the lowest average high temperature is January (0.8°C).

  • Average low temperature in January: -6.1°C

The month with the highest average low temperature is July (19°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

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: 35mm

The wettest month (with the highest rainfall) is May (68mm).
The driest month (with the lowest rainfall) is February (31mm).

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 lowest number of rainy days is February (6.8 days).

Average snowfall in January - Indianapolis, IN
  • Average snowfall in January: 44mm

The month with the highest snowfall is December (58mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

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 lowest number of 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 shortest days is December (Average daylight: 9.4h).

  • Average sunshine in January: 4.1h

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

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).