December weather forecast and climate
Los Alamos, CA

Weather in December

The first month of the winter, December, is also an enjoyable month in Los Alamos, California, with temperature in the range of an average high of 61.2°F (16.2°C) and an average low of 48.6°F (9.2°C).

Temperature

The coldest month is December, with an average high-temperature of 61.2°F (16.2°C) and an average low-temperature of 48.6°F (9.2°C).

Humidity

In Los Alamos, California, the average relative humidity in December is 62%.

Rainfall

In Los Alamos, in December, during 5 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, in Los Alamos, there are 37.7 rainfall days, and 5.98" (152mm) of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 9.9h of daylight.

Sunshine

In Los Alamos, the average sunshine is 6.7h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the coldest month in Los Alamos?

December is the coldest month, with an average high-temperature of 61.2°F (16.2°C) and an average low-temperature of 48.6°F (9.2°C).

What is the temperature in December in Los Alamos?

In Los Alamos, California, in December, the average high-temperature is 61.2°F (16.2°C), and the average low-temperature is 48.6°F (9.2°C).

What is the average humidity in December in Los Alamos?

In Los Alamos, California, the average relative humidity in December is 62%.

How many days does it rain in December in Los Alamos?

In Los Alamos, California, in December, it is raining for 5 days, with typically 0.94" (24mm) of accumulated precipitation.

What is the month with the shortest days in Los Alamos?

December has the shortest days of the year in Los Alamos, with an average of 9.9h of daylight.

What is the average length of the day in December in Los Alamos?

The average length of the day in December is 9.9h.

How long on average sun shines in December in Los Alamos?

In December, the average sunshine in Los Alamos, California, is 6.7h.

When is the lowest UV index in Los Alamos?

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

What is the UV index intensity in December in Los Alamos?

In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in December
Los Alamos, CA

Average temperature in December - Los Alamos, CA
  • Average high temperature in December: 61.2°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 (61.2°F).

  • Average low temperature in December: 48.6°F

The month with the highest average low temperature is September (61.2°F).
The coldest month (with the lowest average low temperature) is February (47.8°F).

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Average pressure in December
Los Alamos, CA

Average pressure in December - Los Alamos, CA
  • Average pressure in December: 30.09"

The month with the highest atmospheric pressure is January (30.11").
Months with the lowest atmospheric pressure are June, August and September (29.91").

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Average wind speed in December
Los Alamos, CA

Average wind speed in December - Los Alamos, CA
  • Average wind speed in December: 7.2mph

The windiest month (with the highest average wind speed) is May (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

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Average humidity in December
Los Alamos, CA

Average humidity in December - Los Alamos, CA
  • Average humidity in December: 62%

The month with the highest relative humidity is March (67%).
Months with the lowest relative humidity are October and November (58%).

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Average rainfall in December
Los Alamos, CA

Average rainfall in December - Los Alamos, CA
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is January (1.38").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Los Alamos, CA

Average rainfall days in December - Los Alamos, CA
  • Average rainfall days in December: 5 days

The month with the highest number of rainy days is March (6.2 days).
The month with the least rainy days is August (0.8 days).

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Average daylight in December /
Average sunshine in December
Los Alamos, CA

Average daylight in December / Average sunshine in December - Los Alamos, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.7h

Months with the most sunshine are June and July (Average sunshine: 12h).
The month with the least sunshine is February (Average sunshine: 6.6h).

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Average sunshine days in December
Los Alamos, CA

Average sunshine days in December - Los Alamos, CA
  • Average sunshine days in December: 25.7 days

The month with the most sunshine days is August (29 days).
The month with the least sunshine days is February (22.3 days).

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Average UV index in December
Los Alamos, CA

Average UV index in December - Los Alamos, CA
  • Average UV index in December: 3

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

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Average cloud cover in December
Los Alamos, CA

Average cloud cover in December - Los Alamos, CA
  • Average cloud cover in December: 23

The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in December
Los Alamos, CA

Average visibility in December - Los Alamos, 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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