December weather forecast and climate
Mecca, CA

Weather in December

The first month of the winter, December, is also a moderate month in Mecca, California, with temperature in the range of an average high of 60.6°F (15.9°C) and an average low of 46.8°F (8.2°C).

Temperature

With an average high-temperature of 60.6°F (15.9°C) and an average low-temperature of 46.8°F (8.2°C), December is the coldest month.

Humidity

The most humid month is December, with an average relative humidity of 46%.

Rainfall

In Mecca, California, in December, during 5 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Mecca, California, during the entire year, the rain falls for 46.2 days and collects up to 4.09" (104mm) of precipitation.

Daylight

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

Sunshine

December has the least sunshine of the year in Mecca, with an average of 7.1h of sunshine.

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index in Mecca. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Mecca?

With an average high-temperature of 60.6°F (15.9°C) and an average low-temperature of 46.8°F (8.2°C), December is the coldest month.

What is the temperature in December in Mecca?

In December, in Mecca, the average high-temperature is 60.6°F (15.9°C), and the average low-temperature is 46.8°F (8.2°C).

What is the most humid month in Mecca?

December is the most humid month in Mecca, with an average relative humidity of 46%.

What is the average humidity in December in Mecca?

In Mecca, the average relative humidity in December is 46%.

How much does it rain in Mecca in December?

In Mecca, California, in December, it is raining for 5 days, with typically 0.55" (14mm) of accumulated precipitation.

What is the month with the shortest days in Mecca?

December has the shortest days of the year, with an average of 10h of daylight.

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

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

What is the month with the least sunshine in Mecca?

December has the least sunshine of the year in Mecca, with an average of 7.1h of sunshine.

How long on average sun shines in December in Mecca?

In Mecca, California, the average sunshine in December is 7.1h.

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

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

What is the UV index reading in December in Mecca?

In December, the average daily maximum UV index in Mecca is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in December
Mecca, CA

Average temperature in December - Mecca, CA
  • Average high temperature in December: 60.6°F

The warmest month (with the highest average high temperature) is July (95.4°F).
The month with the lowest average high temperature is December (60.6°F).

  • Average low temperature in December: 46.8°F

The month with the highest average low temperature is August (76.3°F).
The coldest month (with the lowest average low temperature) is December (46.8°F).

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Average pressure in December
Mecca, CA

Average pressure in December - Mecca, 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 (29.8").

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Average wind speed in December
Mecca, CA

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

The windiest month (with the highest average wind speed) is May (8.2mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).

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Average humidity in December
Mecca, CA

Average humidity in December - Mecca, CA
  • Average humidity in December: 46%

The month with the highest relative humidity is December (46%).
The month with the lowest relative humidity is June (29%).

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Average rainfall in December
Mecca, CA

Average rainfall in December - Mecca, CA
  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is July (0.79").
The driest months (with the least rainfall) are May and June (0.12").

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Average rainfall days in December
Mecca, CA

Average rainfall days in December - Mecca, CA
  • Average rainfall days in December: 5 days

The month with the highest number of rainy days is July (6.9 days).
The month with the least rainy days is June (1.5 days).

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

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

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 7.1h

The month with the most sunshine is June (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7.1h).

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Average sunshine days in December
Mecca, CA

Average sunshine days in December - Mecca, CA
  • Average sunshine days in December: 24.2 days

The month with the most sunshine days is October (27.4 days).
The month with the least sunshine days is July (19.4 days).

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Average UV index in December
Mecca, CA

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

The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
Mecca, CA

Average cloud cover in December - Mecca, CA
  • Average cloud cover in December: 17

The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 4).

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Average visibility in December
Mecca, CA

Average visibility in December - Mecca, 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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