Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The shift from November to December involves a decrease in the average high-temperature, dropping from a frosty 46°F (7.8°C) to an icy 35.1°F (1.7°C). In Llano, the average temperature during the nights of December drops to a freezing cold 15.4°F (-9.2°C).Humidity
In Llano, the average relative humidity in December is 72%.Rainfall
In Llano, in December, during 3.8 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, in Llano, there are 105 rainfall days, and 15.47" (393mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. The months with the most snowfall are February and December, with an average 5.35" (136mm) of accumulated snow.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 6:55 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:58 pm MST.
Sunshine
December has the least sunshine of the year, with an average of 6.7h of sunshine.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
When does it snow the most?
How much does it snow in December?
What is the month with the shortest days in Llano?
How many hours of daylight does Llano have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Llano, NM
- Average high temperature in December: 35.1°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 15.4°F
The month with the highest average low temperature is July (51.8°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Llano, NM
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).
Average wind speed in December
Llano, NM
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Llano, NM
- Average humidity in December: 72%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is June (38%).
Average rainfall in December
Llano, NM
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is July (3.86").
The driest month (with the least rainfall) is November (0.59").
Average rainfall days in December
Llano, NM
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is July (22.3 days).
The month with the least rainy days is November (2.1 days).
Average snowfall in December
Llano, NM
- Average snowfall in December: 5.35"
The months with the highest snowfall are February and December (5.35").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Llano, NM
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Llano, NM
- Average daylight in December: 9h and 4min
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 42min).
- Average sunshine in December: 6h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Llano, NM
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is July (6.3 days).
Average UV index in December
Llano, NM
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Llano, NM
- Average cloud cover in December: 27
The months with the most cloud cover are January and December (Cloud cover 27).
The months with the least cloud cover are June and October (Cloud cover 13).
Average visibility in December
Llano, NM
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Llano, New Mexico, USA
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