December weather forecast and climate
Los Alamos, NM

Weather in December

The first month of the winter, December, is also a wintry month in Los Alamos, New Mexico, with average temperature fluctuating between 38.8°F (3.8°C) and 21.6°F (-5.8°C).

Temperature

In Los Alamos, the average high-temperature decreases, from a frosty 49.5°F (9.7°C) in November, to a cold 38.8°F (3.8°C). In Los Alamos, in December, the average low-temperature is 21.6°F (-5.8°C).

Humidity

In December, the average relative humidity in Los Alamos is 66%.

Rainfall

In December, the rain falls for 6.4 days. Throughout December, 0.75" (19mm) of precipitation is accumulated. In Los Alamos, during the entire year, the rain falls for 106.2 days and collects up to 12.05" (306mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Los Alamos, during 8.1 snowfall days, 4.96" (126mm) of snow is typically accumulated. Throughout the year, in Los Alamos, there are 30.9 snowfall days, and 19.69" (500mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Los Alamos, with an average of 9.8h of daylight.

Sunshine

January, February and December, with an average of 7.1h of sunshine, are months with the least sunshine in Los Alamos.

UV index

Months with the lowest UV index in Los Alamos are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Los Alamos?

The average high-temperature, in December, is 38.8°F (3.8°C), while the average low-temperature is 21.6°F (-5.8°C).

What is the average humidity in December in Los Alamos?

In Los Alamos, New Mexico, the average relative humidity in December is 66%.

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

In December, the rain falls for 6.4 days. Throughout December, 0.75" (19mm) of precipitation is accumulated.

How much does it snow in Los Alamos in December?

In December, in Los Alamos, New Mexico, it is snowing for 8.1 days. Throughout December, 4.96" (126mm) of snow is accumulated.

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

With an average of 9.8h of daylight, December has the shortest days of the year.

How many hours of daylight does Los Alamos have in December?

In December, the average length of the day in Los Alamos is 9.8h.

What is the month with the least sunshine in Los Alamos?

Months with the least sunshine in Los Alamos, New Mexico, are January, February and December, with an average of 7.1h of sunshine.

How many hours of sunshine does Los Alamos have in December?

In Los Alamos, New Mexico, the average sunshine in December is 7.1h.

What are the months with the lowest UV index in Los Alamos?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Los Alamos, New Mexico.

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

In Los Alamos, New Mexico, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays.

Average temperature in December
Los Alamos, NM

Average temperature in December - Los Alamos, NM
  • Average high temperature in December: 38.8°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in December: 21.6°F

The month with the highest average low temperature is July (59.2°F).
The coldest months (with the lowest average low temperature) are January and December (21.6°F).

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Average pressure in December
Los Alamos, NM

Average pressure in December - Los Alamos, NM
  • Average pressure in December: 30.11"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is April (29.89").

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Average wind speed in December
Los Alamos, NM

Average wind speed in December - Los Alamos, NM
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in December
Los Alamos, NM

Average humidity in December - Los Alamos, NM
  • Average humidity in December: 66%

The month with the highest relative humidity is January (70%).
The month with the lowest relative humidity is June (33%).

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Average rainfall in December
Los Alamos, NM

Average rainfall in December - Los Alamos, NM
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is April (0.39").

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Average rainfall days in December
Los Alamos, NM

Average rainfall days in December - Los Alamos, NM
  • Average rainfall days in December: 6.4 days

The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is November (5.1 days).

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Average snowfall in December
Los Alamos, NM

Average snowfall in December - Los Alamos, NM
  • Average snowfall in December: 4.96"

The month with the highest snowfall is January (5.24").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Los Alamos, NM

Average snowfall days in December - Los Alamos, NM
  • Average snowfall days in December: 8.1 days

The month with the highest number of snowfall days is December (8.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Los Alamos, NM
  • Average daylight in December: 9.8h

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in December: 7.1h

The month with the most sunshine is June (Average sunshine: 12.1h).
Months with the least sunshine are January, February and December (Average sunshine: 7.1).

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Average sunshine days in December
Los Alamos, NM

Average sunshine days in December - Los Alamos, NM
  • Average sunshine days in December: 20.5 days

The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is July (8.9 days).

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Average UV index in December
Los Alamos, NM

Average UV index in December - Los Alamos, NM
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Los Alamos, NM

Average cloud cover in December - Los Alamos, NM
  • Average cloud cover in December: 21

The month with the most cloud cover is January (Cloud cover 22).
The month with the least cloud cover is June (Cloud cover 10).

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Average visibility in December
Los Alamos, NM

Average visibility in December - Los Alamos, NM
  • 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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