December weather forecast
Day Valley, CA

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Weather in December

The first month of the winter, December, is still a refreshing month in Day Valley, California, with an average temperature ranging between min 43.7°F (6.5°C) and max 56.3°F (13.5°C).

Temperature

The coldest month is December, with an average high-temperature of 56.3°F (13.5°C) and an average low-temperature of 43.7°F (6.5°C).

Humidity

In Day Valley, the average relative humidity in December is 71%.

Rainfall

In Day Valley, during December, the rain falls for 9.3 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Day Valley, during the entire year, the rain falls for 69.6 days and collects up to 12.09" (307mm) of precipitation.

Daylight

The month with the shortest days is December, with an average of 9h and 42min of daylight.
On the first day of December in Day Valley, sunrise is at 7:02 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:01 pm PST.

Sunshine

The month with the least sunshine is December, with an average of 6h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 3 translates into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What time of the year is the coldest in Day Valley?

With average high and low temperatures of 56.3°F (13.5°C) and 43.7°F (6.5°C) respectively, December is Day Valley's coldest month.

What is the average December temperature in Day Valley?

The high-temperature, in December, in Day Valley, records 56.3°F (13.5°C), while the low-temperature is 43.7°F (6.5°C).

What is the average humidity in December in Day Valley?

The average relative humidity in December in Day Valley, California, is 71%.

How many days does it rain in December in Day Valley?

In Day Valley, in December, it is raining for 9.3 days, with typically 2.2" (56mm) of accumulated precipitation.

What is the month with the shortest days in Day Valley?

December has the shortest days of the year in Day Valley, California, with an average of 9h and 42min of daylight.

What is the average length of the day in December in Day Valley?

In Day Valley, California, the average day length in December is 9h and 40min.

When is the sunrise / sunset in December in Day Valley?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:50 pm. On the last day of the month, in Day Valley, sunrise is at 7:20 am and sunset at 5:01 pm PST.

What is the month with the least sunshine in Day Valley?

December has the least sunshine of the year, with an average of 6h of sunshine.

How long on average sun shines in December in Day Valley?

In Day Valley, the average sunshine duration in December is 6h.

What are the months with the lowest UV index in Day Valley?

The months with the lowest UV index in Day Valley are January, February, November and December, with an average maximum UV index of 3.

How high is the UV index in December in Day Valley?

In Day Valley, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Day Valley, CA

Average temperature in December - Day Valley, CA
  • Average high temperature in December: 56.3°F

The warmest month (with the highest average high temperature) is August (78.8°F).
The month with the lowest average high temperature is December (56.3°F).

  • Average low temperature in December: 43.7°F

The month with the highest average low temperature is September (55°F).
The coldest month (with the lowest average low temperature) is February (43°F).

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Average pressure in December
Day Valley, CA

Average pressure in December - Day Valley, CA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).

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Average wind speed in December
Day Valley, CA

Average wind speed in December - Day Valley, CA
  • Average wind speed in December: 5.1mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.7mph).

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Average humidity in December
Day Valley, CA

Average humidity in December - Day Valley, CA
  • Average humidity in December: 71%

The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (64%).

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Average rainfall in December
Day Valley, CA

Average rainfall in December - Day Valley, CA
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is February (2.32").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in December
Day Valley, CA

Average rainfall days in December - Day Valley, CA
  • Average rainfall days in December: 9.3 days

The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is August (1.1 days).

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Average daylight in December /
Average sunshine in December
Day Valley, CA

Average daylight in December / Average sunshine in December - Day Valley, CA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 6h and 0min

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

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Average sunshine days in December
Day Valley, CA

Average sunshine days in December - Day Valley, CA
  • Average sunshine days in December: 20.4 days

The month with the most sunshine days is July (28.2 days).
The month with the least sunshine days is March (16.8 days).

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Average UV index in December
Day Valley, CA

Average UV index in December - Day Valley, CA
  • Average UV index in December: 3

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in December
Day Valley, CA

Average cloud cover in December - Day Valley, CA
  • Average cloud cover in December: 32

The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in December
Day Valley, CA

Average visibility in December - Day Valley, 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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Day Valley, California, USA

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