December weather forecastLake Sumner, NM
December
Weather in December
December, the first month of the winter in Lake Sumner, is still a chilly month, with temperature in the range of an average low of 31.5°F (-0.3°C) and an average high of 49.3°F (9.6°C).Temperature
December stands out as Lake Sumner's coldest month, with an average high-temperature of 49.3°F (9.6°C) and a low-temperature of 31.5°F (-0.3°C).Humidity
The most humid month is December, with an average relative humidity of 52%.Rainfall
In Lake Sumner, in December, it is raining for 3.2 days, with typically 0.51" (13mm) of accumulated precipitation. In Lake Sumner, during the entire year, the rain falls for 78.6 days and collects up to 9.06" (230mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Lake Sumner, during December, snow falls for 3.5 days and regularly aggregates up to 1.65" (42mm) of snow. Throughout the year, there are 13.6 snowfall days, and 8.19" (208mm) of snow is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:46 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 4:57 pm MST.
Sunshine
January and December, with an average of 7.1h of sunshine, are months with the least sunshine in Lake Sumner.UV index
December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lake Sumner, NM
- Average high temperature in December: 49.3°F
The warmest months (with the highest average high temperature) are June and July (90°F).
The month with the lowest average high temperature is December (49.3°F).
- Average low temperature in December: 31.5°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in December
Lake Sumner, NM
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is April (29.86"Hg).
Average wind speed in December
Lake Sumner, NM
- Average wind speed in December: 11.7mph
The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (9mph).
Average humidity in December
Lake Sumner, NM
- Average humidity in December: 52%
The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is April (31%).
Average rainfall in December
Lake Sumner, NM
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in December
Lake Sumner, NM
- Average rainfall days in December: 3.2 days
The month with the highest number of rainy days is July (12.5 days).
The month with the least rainy days is November (2.4 days).
Average snowfall in December
Lake Sumner, NM
- Average snowfall in December: 1.65"
The month with the highest snowfall is November (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Lake Sumner, NM
- Average snowfall days in December: 3.5 days
The months with the highest number of snowfall days are January and December (3.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lake Sumner, NM
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 7h and 6min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 7h and 6min).
Average sunshine days in December
Lake Sumner, NM
- Average sunshine days in December: 24.6 days
The month with the most sunshine days is November (25.5 days).
The month with the least sunshine days is July (14 days).
Average UV index in December
Lake Sumner, NM
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Lake Sumner, NM
- Average cloud cover in December: 19
The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 12).
Average visibility in December
Lake Sumner, 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).





