December weather forecast and climate
Crest, CA

Weather in December

December, the first month of the winter, in Crest, is also an enjoyable month, with average temperature varying between 46.6°F (8.1°C) and 63.7°F (17.6°C).

Temperature

December is the coldest month, with an average high-temperature of 63.7°F (17.6°C) and an average low-temperature of 46.6°F (8.1°C).

Humidity

In Crest, the average relative humidity in December is 58%.

Rainfall

In Crest, California, it is raining for 5.1 days, with typically 0.71" (18mm) of accumulated precipitation. In Crest, during the entire year, the rain falls for 49.6 days and collects up to 5.16" (131mm) of precipitation.

Daylight

The month with the shortest days in Crest, California, is December, with an average of 10h of daylight.

Sunshine

December has the least sunshine of the year in Crest, with an average of 6.7h of sunshine.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the coldest month in Crest?

December is the coldest month in Crest, with an average high-temperature of 63.7°F (17.6°C) and an average low-temperature of 46.6°F (8.1°C).

What is the temperature in December in Crest?

In December, in Crest, California, the average high-temperature is 63.7°F (17.6°C), and the average low-temperature is 46.6°F (8.1°C).

What is the average humidity in December in Crest?

In Crest, California, the average relative humidity in December is 58%.

How much does it rain in Crest in December?

In Crest, during December, the rain falls for 5.1 days and regularly aggregates up to 0.71" (18mm) of precipitation.

What is the month with the shortest days in Crest?

The month with the shortest days in Crest, California, is December, with an average of 10h of daylight.

How many hours of daylight does Crest have in December?

The average length of the day in December in Crest, California, is 10h.

What is the month with the least sunshine in Crest?

The month with the least sunshine in Crest is December, with an average of 6.7h of sunshine.

How long on average sun shines in December in Crest?

The average sunshine in December in Crest, California, is 6.7h.

When is the lowest UV index in Crest?

With an average maximum UV index of 3, December is the month with the lowest UV index in Crest.

What is the UV index intensity in December in Crest?

The average daily maximum UV index in December in Crest is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in December
Crest, CA

Average temperature in December - Crest, CA
  • Average high temperature in December: 63.7°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is December (63.7°F).

  • Average low temperature in December: 46.6°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).

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Average pressure in December
Crest, CA

Average pressure in December - Crest, CA
  • Average pressure in December: 30.06"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in December
Crest, CA

Average wind speed in December - Crest, CA
  • Average wind speed in December: 4.8mph

The windiest months (with the highest average wind speed) are April and May (5.3mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.2mph).

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Average humidity in December
Crest, CA

Average humidity in December - Crest, CA
  • Average humidity in December: 58%

The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).

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Average rainfall in December
Crest, CA

Average rainfall in December - Crest, CA
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is February (1.06").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Crest, CA

Average rainfall days in December - Crest, CA
  • Average rainfall days in December: 5.1 days

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is June (1.4 days).

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

Average daylight in December / Average sunshine in December - Crest, CA
  • Average daylight in December: 10h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 6.7h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in December
Crest, CA

Average sunshine days in December - Crest, CA
  • Average sunshine days in December: 25.2 days

The month with the most sunshine days is June (28 days).
The month with the least sunshine days is July (20.7 days).

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Average UV index in December
Crest, CA

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

Months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
Crest, CA

Average cloud cover in December - Crest, CA
  • Average cloud cover in December: 23

Months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in December
Crest, CA

Average visibility in December - Crest, 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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