December weather forecastMoriarty, NM
December
Weather in December
December, the final month of the year in Moriarty, New Mexico, sees temperatures falling to an annual low with 25.5°F (-3.6°C) marking the coldest nights. Compared to the other months, snowfall hits its annual peak level at 3.82" (97mm) across approximately 6.8 days. The humidity matches January levels, creating a sense of deja vu as the year comes full circle. Wind speed remains consistent with the preceding month, contributing to the overall chill in the air. As daylight hours reach their minimum, the winter season settles in fully, marking a climatic end to the year.Temperature
Stepping into December, Moriarty observes a temperature decline, with the average high falling from November's cool 52.7°F (11.5°C) to a wintry 42.3°F (5.7°C). In December, the recorded average low-temperature in Moriarty, New Mexico, is a freezing cold 25.5°F (-3.6°C).Humidity
In Moriarty, the average relative humidity in December is 63%.Rainfall
In December, the rain falls for 3.9 days. Throughout December, 0.75" (19mm) of precipitation is accumulated. Throughout the year, there are 86.3 rainfall days, and 10.71" (272mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall in Moriarty is December, when snow falls for 6.8 days and typically aggregates up to 3.82" (97mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:54 am and sunset at 4:52 pm. On the last day of December, sunrise is at 7:11 am and sunset at 5:03 pm MST.
Sunshine
With an average of 6.8h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Moriarty are January, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 2 in December transforms into this advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. To guard against the harmful effects of the Sun, minimize exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Moriarty, NM
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is June (84.2°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in December
Moriarty, NM
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is April (29.88"Hg).
Average wind speed in December
Moriarty, NM
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in December
Moriarty, NM
- Average humidity in December: 63%
The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is June (31%).
Average rainfall in December
Moriarty, NM
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is July (2.09").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in December
Moriarty, NM
- Average rainfall days in December: 3.9 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in December
Moriarty, NM
- Average snowfall in December: 3.82"
The month with the highest snowfall is December (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Moriarty, NM
- Average snowfall days in December: 6.8 days
The month with the highest number of snowfall days is December (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Moriarty, NM
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 48min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in December
Moriarty, NM
- Average sunshine days in December: 21.6 days
The months with the most sunshine days are January and November (24.1 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in December
Moriarty, NM
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in December
Moriarty, NM
- Average cloud cover in December: 24
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 12).
Average visibility in December
Moriarty, 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).





