December weather forecast
Bloomington, IN

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Weather in December

December in Bloomington is a display of enchanting winters, characterized by dipping temperatures and increased snowfall. The average snowfall scales to 1.85" (47mm), biggest since January’s snowfall of 2.28" (58mm). It rings in the long-awaited festive season with the city beautifully festooned in Christmas decorations. Holiday cheer engulfs the city, providing some relief from the winter gloom and cold. Despite being one of the coldest months, December brings about a certain charm, making Bloomington a winter wonderland.

Temperature

December's onset in Bloomington corresponds with a shift in the average high-temperature, moving from a cool 51.3°F (10.7°C) in November to a wintry 40.6°F (4.8°C). Bloomington records an average nighttime low of 29.3°F (-1.5°C) in December.

Humidity

May and December, with an average relative humidity of 82%, are the most humid months.

Rainfall

In December, the rain falls for 9.5 days. Throughout December, 2.17" (55mm) of precipitation is accumulated. Throughout the year, there are 150.5 rainfall days, and 27.56" (700mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In December, in Bloomington, it is snowing for 5.8 days. Throughout December, 1.85" (47mm) of snow is accumulated. In Bloomington, during the entire year, snow falls for 26.7 days and aggregates up to 9.13" (232mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:47 am and sunset at 5:23 pm. On the last day of December, sunrise is at 8:05 am and sunset at 5:33 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 4.2h of sunshine.

UV index

January, February, October and December, with an average maximum UV index of 2, are months with the lowest UV index in Bloomington. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 in December translates into these instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Frequently asked questions

Is it cold in Bloomington during December?

The average high-temperature, in December, in Bloomington, is 40.6°F (4.8°C), while the average low-temperature is 29.3°F (-1.5°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 91.4°F (33°C).

What is the most humid month in Bloomington?

May and December, with an average relative humidity of 82%, are most humid months in Bloomington.

What is the average humidity in December in Bloomington?

In December, the average relative humidity in Bloomington is 82%.

How many days does it rain in December in Bloomington?

In Bloomington, in December, during 9.5 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

How much does it snow in Bloomington in December?

In Bloomington, Indiana, during December, snow falls for 5.8 days and regularly aggregates up to 1.85" (47mm) of snow.

What is the month with the shortest days in Bloomington?

December has the shortest days of the year in Bloomington, with an average of 9h and 30min of daylight.

How many hours of daylight does Bloomington have in December?

In December, the average day length is 9h and 28min.

When is the sunrise / sunset in December in Bloomington?

On the first day of December in Bloomington, sunrise is at 7:47 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 8:05 am and sunset at 5:33 pm EST.

What is the month with the least sunshine in Bloomington?

With an average of 4.2h of sunshine, December has the least sunshine of the year in Bloomington.

How long on average sun shines in December in Bloomington?

In December, the average sunshine duration is 4.2h.

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

The months with the lowest UV index are January, February, October and December, with an average maximum UV index of 2.

What is the UV index intensity in December in Bloomington?

In December, the average daily maximum UV index in Bloomington, Indiana, is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
Bloomington, IN

Average temperature in December - Bloomington, IN
  • Average high temperature in December: 40.6°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in December: 29.3°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 (22.5°F).

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Average pressure in December
Bloomington, IN

Average pressure in December - Bloomington, IN
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Bloomington, IN

Average wind speed in December - Bloomington, IN
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in December
Bloomington, IN

Average humidity in December - Bloomington, IN
  • Average humidity in December: 82%

The months with the highest relative humidity are May and December (82%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in December
Bloomington, IN

Average rainfall in December - Bloomington, IN
  • Average rainfall in December: 2.17"

The wettest month (with the highest rainfall) is April (3.11").
The driest months (with the least rainfall) are September and October (1.65").

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Average rainfall days in December
Bloomington, IN

Average rainfall days in December - Bloomington, IN
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in December
Bloomington, IN

Average snowfall in December - Bloomington, IN
  • Average snowfall in December: 1.85"

The month with the highest snowfall is March (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Bloomington, IN

Average snowfall days in December - Bloomington, IN
  • Average snowfall days in December: 5.8 days

The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Bloomington, IN
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

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Average sunshine days in December
Bloomington, IN

Average sunshine days in December - Bloomington, IN
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (9.2 days).

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Average UV index in December
Bloomington, IN

Average UV index in December - Bloomington, IN
  • Average UV index in December: 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 and December (UV index 2).

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Average cloud cover in December
Bloomington, IN

Average cloud cover in December - Bloomington, IN
  • Average cloud cover in December: 55

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in December
Bloomington, IN

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

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

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Bloomington, Indiana, USA

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