December weather forecast and climate
Bloomington, CA

Weather in December

December, the first month of the winter, in Bloomington, is also an enjoyable month, with temperature in the range of an average high of 60.8°F (16°C) and an average low of 44.2°F (6.8°C).

Temperature

The coldest month is December, with an average high-temperature of 60.8°F (16°C) and an average low-temperature of 44.2°F (6.8°C).

Humidity

In December, the average relative humidity in Bloomington is 51%.

Rainfall

In December, in Bloomington, the rain falls for 5.9 days. Throughout December, 1.5" (38mm) of precipitation is accumulated. Throughout the year, in Bloomington, there are 48.1 rainfall days, and 6.89" (175mm) of precipitation is accumulated.

Snowfall

In Bloomington snow does not fall in January, March through December.

Daylight

December has the shortest days of the year, with an average of 9.9h of daylight.

Sunshine

December has the least sunshine of the year in Bloomington, with an average of 6.9h of sunshine.

UV index

December is the month with the lowest UV index in Bloomington, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
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FAQ

What is the coldest month in Bloomington?

With an average high-temperature of 60.8°F (16°C) and an average low-temperature of 44.2°F (6.8°C), December is the coldest month in Bloomington, California.

What is the temperature in December in Bloomington?

In December, in Bloomington, California, the average high-temperature is 60.8°F (16°C), and the average low-temperature is 44.2°F (6.8°C).

What is the average humidity in December in Bloomington?

The average relative humidity in December in Bloomington, California, is 51%.

How many days does it rain in December in Bloomington?

In Bloomington, in December, during 5.9 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

When it does not snow in Bloomington?

January, March through December are months without snowfall.

What is the month with the shortest days in Bloomington?

December has the shortest days of the year, with an average of 9.9h of daylight.

How many hours of daylight does Bloomington have in December?

In December, the average length of the day is 9.9h.

What is the month with the least sunshine in Bloomington?

With an average of 6.9h of sunshine, December has the least sunshine of the year in Bloomington, California.

How many hours of sunshine does Bloomington have in December?

The average sunshine in December in Bloomington, California, is 6.9h.

When is the lowest UV index in Bloomington?

The month with the lowest UV index in Bloomington, California, is December, with an average maximum UV index of 3.

What is the UV index intensity in December in Bloomington?

The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in December
Bloomington, CA

Average temperature in December - Bloomington, CA
  • Average high temperature in December: 60.8°F

The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is December (60.8°F).

  • Average low temperature in December: 44.2°F

The month with the highest average low temperature is August (67.3°F).
The coldest months (with the lowest average low temperature) are February and December (44.2°F).

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Average pressure in December
Bloomington, CA

Average pressure in December - Bloomington, CA
  • Average pressure in December: 30.07"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in December
Bloomington, CA

Average wind speed in December - Bloomington, CA
  • Average wind speed in December: 5.3mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in December
Bloomington, CA

Average humidity in December - Bloomington, CA
  • Average humidity in December: 51%

Months with the highest relative humidity are February, March and May (52%).
The month with the lowest relative humidity is August (39%).

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Average rainfall in December
Bloomington, CA

Average rainfall in December - Bloomington, CA
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is February (1.57").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Bloomington, CA

Average rainfall days in December - Bloomington, CA
  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall days in December
Bloomington, CA

Average snowfall days in December - Bloomington, CA
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.1 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in December / Average sunshine in December - Bloomington, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.9h

Months with the most sunshine are June, July and August (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.9h).

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Average sunshine days in December
Bloomington, CA

Average sunshine days in December - Bloomington, CA
  • Average sunshine days in December: 23.8 days

The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21.1 days).

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Average UV index in December
Bloomington, CA

Average UV index in December - Bloomington, CA
  • Average UV index in December: 3

Months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
Bloomington, CA

Average cloud cover in December - Bloomington, CA
  • Average cloud cover in December: 21

Months with the most cloud cover are February, March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in December
Bloomington, CA

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

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

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