December weather forecast
Portage, IN

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Weather in December

December welcomes winter back to Portage, Indiana, as temperatures drop distinctly below those of the previous month. The winter chill is accompanied by increased cloud cover and shortened sunlight hours, establishing a winter weather pattern. Residents often find themselves battling gusty winds while pursuing holiday activities. Among winters significant features, snowfall makes a return marking December as the start of winter once again. Considerably, snowfall drifts start with an average of 2.05" (52mm) across the city.

Temperature

December's arrival corresponds with a decrease in average high-temperatures, from November's chilly 46.8°F (8.2°C) to a wintry 36.1°F (2.3°C). December nights in Portage, Indiana, register a minor temperature decline, steadying at a freezing cold 27.5°F (-2.5°C).

Humidity

In Portage, the average relative humidity in December is 81%.

Rainfall

In Portage, in December, during 9.6 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Portage, during the entire year, the rain falls for 157.4 days and collects up to 23.9" (607mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Portage. In Portage, during December, snow falls for 10.4 days and regularly aggregates up to 2.05" (52mm) of snow. Throughout the year, there are 47 snowfall days, and 10.75" (273mm) of snow is accumulated.

Daylight

The month with the shortest days in Portage, Indiana, is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 6:56 am and sunset at 4:19 pm. On the last day of December, in Portage, sunrise is at 7:15 am and sunset at 4:28 pm CST.

Sunshine

The average sunshine in December in Portage, Indiana, is 3.9h.

UV index

The months with the lowest UV index in Portage are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, an average UV index of 1 transforms into the following instructions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

How cold is December in Portage?

During December, Portage experiences an average high-temperature of 36.1°F (2.3°C) and a low-temperature of 27.5°F (-2.5°C).

What is the average humidity in December in Portage?

The average relative humidity in December is 81%.

How much does it rain in Portage in December?

In December, in Portage, Indiana, the rain falls for 9.6 days. Throughout December, 1.22" (31mm) of precipitation is accumulated.

How much does it snow in Portage in December?

In Portage, during December, snow falls for 10.4 days and regularly aggregates up to 2.05" (52mm) of snow.

What is the month with the shortest days in Portage?

The month with the shortest days in Portage is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December in Portage?

In Portage, Indiana, the average day length in December is 9h and 13min.

What time are sunrise and sunset in December in Portage?

On the first day of December in Portage, Indiana, sunrise is at 6:56 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:28 pm CST.

How long on average sun shines in December in Portage?

The average sunshine duration in December in Portage, Indiana, is 3.9h.

When is the lowest UV index in Portage?

The months with the lowest UV index in Portage, Indiana, are January and December, with an average maximum UV index of 1.

How high is the UV index in December in Portage?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Portage, IN

Average temperature in December - Portage, IN
  • Average high temperature in December: 36.1°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (30.2°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in December
Portage, IN

Average pressure in December - Portage, IN
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Portage, IN

Average wind speed in December - Portage, IN
  • Average wind speed in December: 10.7mph

The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

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Average humidity in December
Portage, IN

Average humidity in December - Portage, IN
  • Average humidity in December: 81%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in December
Portage, IN

Average rainfall in December - Portage, IN
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is February (1.18").

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Average rainfall days in December
Portage, IN

Average rainfall days in December - Portage, IN
  • Average rainfall days in December: 9.6 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (7.2 days).

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Average snowfall in December
Portage, IN

Average snowfall in December - Portage, IN
  • Average snowfall in December: 2.05"

The month with the highest snowfall is January (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Portage, IN

Average snowfall days in December - Portage, IN
  • Average snowfall days in December: 10.4 days

The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Portage, IN

Average daylight in December / Average sunshine in December - Portage, IN
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in December
Portage, IN

Average sunshine days in December - Portage, IN
  • Average sunshine days in December: 13.2 days

The month with the most sunshine days is November (15.7 days).
The months with the least sunshine days are June and August (10.4 days).

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Average UV index in December
Portage, IN

Average UV index in December - Portage, IN
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in December
Portage, IN

Average cloud cover in December - Portage, IN
  • Average cloud cover in December: 60

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in December
Portage, IN

Average visibility in December - Portage, IN
  • Average visibility in December: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Portage, Indiana, USA

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