December weather forecast
Wister, CA

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Weather in December

December, the first month of the winter in Wister, is also an enjoyable month, with an average temperature fluctuating between 50.4°F (10.2°C) and 65.8°F (18.8°C).

Temperature

Temperature readings reach their annual highs in December, averaging 65.8°F (18.8°C) and a minimum average of 50.4°F (10.2°C).

Humidity

With an average relative humidity of 41%, December is the most humid month in Wister.

Rainfall

In December, the rain falls for 2.2 days. Throughout December, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 34.3 rainfall days, and 3.46" (88mm) of precipitation is accumulated.

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year in Wister.
On the first day of the month, sunrise is at 6:28 am and sunset at 4:34 pm. On the last day of December, sunrise is at 6:45 am and sunset at 4:45 pm PST.

Sunshine

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

UV index

The month with the lowest UV index is December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In December, an average UV index of 4 transforms into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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Frequently asked questions

What month is the coldest in Wister?

December is the coldest month of the year in Wister, California, registering average temperatures as high as 65.8°F (18.8°C) and as low as 50.4°F (10.2°C).

What are December temperatures in Wister?

In Wister, 65.8°F (18.8°C) is the average high-temperature and 50.4°F (10.2°C) is the average low-temperature during December.

What is the most humid month in Wister?

December is the most humid month in Wister, with an average relative humidity of 41%.

What is the average humidity in December in Wister?

The average relative humidity in December in Wister is 41%.

How many days does it rain in December in Wister?

In Wister, in December, it is raining for 2.2 days, with typically 0.2" (5mm) of accumulated precipitation.

What is the month with the shortest days in Wister?

With an average of 10h and 0min of daylight, December has the shortest days of the year in Wister.

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

The average day length in December is 9h and 59min.

When is the sunrise / sunset in December in Wister?

On the first day of December in Wister, California, sunrise is at 6:28 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 4:45 pm PST.

What is the month with the least sunshine in Wister?

December has the least sunshine of the year in Wister, California, with an average of 7h of sunshine.

How many hours of sunshine does Wister have in December?

In December, the average sunshine duration in Wister, California, is 7h.

What is the month with the lowest UV index in Wister?

December is the month with the lowest UV index in Wister, California, with an average maximum UV index of 4.

How high is the UV index in December in Wister?

In December, the average daily maximum UV index in Wister, California, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Wister, CA

Average temperature in December - Wister, CA
  • Average high temperature in December: 65.8°F

The warmest month (with the highest average high temperature) is July (105.8°F).
The month with the lowest average high temperature is December (65.8°F).

  • Average low temperature in December: 50.4°F

The month with the highest average low temperature is August (84.7°F).
The coldest months (with the lowest average low temperature) are January and December (50.4°F).

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Average pressure in December
Wister, CA

Average pressure in December - Wister, CA
  • Average pressure in December: 30.05"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.77"Hg).

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Average wind speed in December
Wister, CA

Average wind speed in December - Wister, CA
  • Average wind speed in December: 5.8mph

The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).

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Average humidity in December
Wister, CA

Average humidity in December - Wister, CA
  • Average humidity in December: 41%

The month with the highest relative humidity is December (41%).
The month with the lowest relative humidity is June (22%).

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Average rainfall in December
Wister, CA

Average rainfall in December - Wister, CA
  • Average rainfall in December: 0.2"

The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is May (0").

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Average rainfall days in December
Wister, CA

Average rainfall days in December - Wister, CA
  • Average rainfall days in December: 2.2 days

The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is May (0.8 days).

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

Average daylight in December / Average sunshine in December - Wister, CA
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 7h and 0min

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

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Average sunshine days in December
Wister, CA

Average sunshine days in December - Wister, CA
  • Average sunshine days in December: 28.2 days

The month with the most sunshine days is May (30 days).
The month with the least sunshine days is July (19 days).

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Average UV index in December
Wister, CA

Average UV index in December - Wister, CA
  • Average UV index in December: 4

The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 4).

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Average cloud cover in December
Wister, CA

Average cloud cover in December - Wister, CA
  • Average cloud cover in December: 18

The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in December
Wister, CA

Average visibility in December - Wister, 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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Wister, California, USA

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