December weather forecastLos Alamos, NM
December
Weather in December
December brings with it the return of winter in Los Alamos. The weather turns harsher and colder, marking the onset of the winter solstice. The sight of falling snowflakes becomes a common spectacle, painting a picturesque white landscape. As temperatures dip to a low of 21.6°F (-5.8°C), the city immerses itself fully in the winter narrative. It is a month of jubilation, brought alive with festive lights and holiday spirits against the backdrop of pristine, snow-clad scenes.Temperature
Los Alamos observes a minor decrease in the average high-temperature with the arrival of December, falling from November's frosty 49.5°F (9.7°C) to an icy 38.8°F (3.8°C). The average low-temperature during December nights is a subzero cold 21.6°F (-5.8°C).Humidity
In Los Alamos, the average relative humidity in December is 66%.Rainfall
In December, the rain falls for 6.4 days. Throughout December, 0.75" (19mm) of precipitation is accumulated. In Los Alamos, New Mexico, during the entire year, the rain falls for 106.2 days and collects up to 12.05" (306mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Los Alamos, in December, snow falls for 8.1 days, with typically accumulated 4.96" (126mm) of snow. Throughout the year, there are 30.9 snowfall days, and 19.69" (500mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:51 pm. On the last day of December, in Los Alamos, sunrise is at 7:15 am and sunset at 5:01 pm MST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 7.1h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
Average pressure in December
Los Alamos, NM
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).
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).
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%).
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").
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).
Average snowfall in December
Los Alamos, NM
- Average snowfall in December: 4.96"
The month with the highest snowfall is January (5.24").
The months with the least snowfall are June, July, August and September (0").
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).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Los Alamos, NM
- Average daylight in December: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 7h and 6min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 6min).
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).
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).
The months with the lowest UV index are January, February, November and December (UV index 2).
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).
Average visibility in December
Los Alamos, NM
- 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).
