Indianapolis
Indiana, USA
Long-term weather forecast
Long-term weather forecast
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January weather forecast and Climate
Indianapolis, IN

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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 around 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.
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  • The 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).

  • The 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).

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  • The 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%).

  • The 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").

  • The 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).

  • The 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").

  • The 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).

  • The average daylight in January: 10h

Months with the longest days are June and July (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9h).

  • The 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).

  • The 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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