December weather forecast
Big River, CA

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Weather in December

The first month of the winter, December, is also an enjoyable month in Big River, California, with temperature in the range of an average low of 47.1°F (8.4°C) and an average high of 61.2°F (16.2°C).

Temperature

December, recording an average high temperature of 61.2°F (16.2°C) and a low temperature of 47.1°F (8.4°C), is Big River's coldest month.

Humidity

The months with the highest humidity in Big River are January and December, with an average relative humidity of 39%.

Rainfall

In Big River, during December, the rain falls for 3.6 days and regularly aggregates up to 0.35" (9mm) of precipitation. In Big River, during the entire year, the rain falls for 39.4 days and collects up to 3.9" (99mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of December, sunrise is at 6:25 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 4:38 pm PST.

Sunshine

The month with the least sunshine in Big River, California, is December, with an average of 7h of sunshine.

UV index

December is the month with the lowest UV index in Big River, California, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 3 during December translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

What is the coldest time of year in Big River?

Big River experiences its average lowest temperatures in December, reaching a peak of 61.2°F (16.2°C) and a minimum of 47.1°F (8.4°C).

What is the usual temperature for Big River in December?

The high-temperature, in December, in Big River, is 61.2°F (16.2°C), while the low-temperature averages to 47.1°F (8.4°C).

What are the most humid months in Big River?

January and December, with an average relative humidity of 39%, are most humid months in Big River, California.

What is the average humidity in December in Big River?

The average relative humidity in December in Big River, California, is 39%.

How many days does it rain in December in Big River?

In Big River, California, in December, it is raining for 3.6 days, with typically 0.35" (9mm) of accumulated precipitation.

What is the month with the shortest days in Big River?

December has the shortest days of the year, with an average of 9h and 54min of daylight.

How many hours of daylight does Big River have in December?

In December, the average day length in Big River, California, is 9h and 55min.

When are sunrise and sunset in December in Big River?

On the first day of December, sunrise is at 6:25 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 4:38 pm PST.

What is the month with the least sunshine in Big River?

With an average of 7h of sunshine, December has the least sunshine of the year in Big River, California.

How many hours of sunshine does Big River have in December?

In Big River, the average sunshine duration in December is 7h.

What is the month with the lowest UV index in Big River?

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

What is the UV index intensity in December in Big River?

The average daily maximum UV index in December in Big River is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Big River, CA

Average temperature in December - Big River, CA
  • Average high temperature in December: 61.2°F

The warmest month (with the highest average high temperature) is July (104.2°F).
The month with the lowest average high temperature is December (61.2°F).

  • Average low temperature in December: 47.1°F

The month with the highest average low temperature is August (85.6°F).
The coldest month (with the lowest average low temperature) is December (47.1°F).

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Average pressure in December
Big River, CA

Average pressure in December - Big River, CA
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).

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Average wind speed in December
Big River, CA

Average wind speed in December - Big River, CA
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is November (5.8mph).

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Average humidity in December
Big River, CA

Average humidity in December - Big River, CA
  • Average humidity in December: 39%

The months with the highest relative humidity are January and December (39%).
The month with the lowest relative humidity is June (15%).

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Average rainfall in December
Big River, CA

Average rainfall in December - Big River, CA
  • Average rainfall in December: 0.35"

The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are May and June (0.04").

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Average rainfall days in December
Big River, CA

Average rainfall days in December - Big River, CA
  • Average rainfall days in December: 3.6 days

The month with the highest number of rainy days is July (7.8 days).
The month with the least rainy days is May (1.2 days).

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Average daylight in December /
Average sunshine in December
Big River, CA

Average daylight in December / Average sunshine in December - Big River, CA
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 7h and 0min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in December
Big River, CA

Average sunshine days in December - Big River, CA
  • Average sunshine days in December: 26.8 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (20.2 days).

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Average UV index in December
Big River, CA

Average UV index in December - Big River, CA
  • Average UV index in December: 3

The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
Big River, CA

Average cloud cover in December - Big River, CA
  • Average cloud cover in December: 19

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in December
Big River, CA

Average visibility in December - Big River, CA
  • Average visibility in December: 6mi

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

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Big River, California, USA

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