December weather forecastLa Mesa, NM

December

Weather in December

The first month of the winter, December, is still a cool month in La Mesa, New Mexico, with an average temperature varying between 38.8°F (3.8°C) and 54.5°F (12.5°C).

Temperature

The coldest period is December, when temperatures fluctuate between an average high of 54.5°F (12.5°C) and a low of 38.8°F (3.8°C).

Humidity

With an average relative humidity of 49%, December is the most humid month.

Rainfall

In La Mesa, during December, the rain falls for 4.2 days and regularly aggregates up to 0.47" (12mm) of precipitation. Throughout the year, there are 62.9 rainfall days, and 6.65" (169mm) of precipitation is accumulated.

Snowfall

Months with snowfall in La Mesa are January, February, November and December. The months with the most snowfall are February and December, with an average 0.63" (16mm) of accumulated snow.

Daylight

With an average of 10h and 6min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:50 am and sunset at 5:01 pm. On the last day of December, sunrise is at 7:07 am and sunset at 5:12 pm MST.

Sunshine

With an average of 7h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 3 during December leads to these instructions:
Exercise prevention - Precautions against solar damage are endorsed. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.

Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The coldest temperatures occur during December, when averages reach a peak of 54.5°F (12.5°C) and a low of 38.8°F (3.8°C).

In La Mesa, in December, the average high-temperature is 54.5°F (12.5°C), and the average low-temperature is 38.8°F (3.8°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 86°F (30°C).

The most humid month is December, with an average relative humidity of 49%.

In December, the average relative humidity is 49%.

In La Mesa, in December, it is raining for 4.2 days, with typically 0.47" (12mm) of accumulated precipitation.

The months with the most snowfall are February and December, with an average 0.63" (16mm) of accumulated snow.

In La Mesa, New Mexico, in December, during 1 snowfall days, 0.63" (16mm) of snow is typically accumulated.

December has the shortest days of the year, with an average of 10h and 6min of daylight.

In December, the average day length is 10h and 5min.

In December, on the first day of the month, sunrise is at 6:50 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:12 pm MST.

December has the least sunshine of the year, with an average of 7h of sunshine.

In La Mesa, the average sunshine duration in December is 7h.

January, November and December, with an average maximum UV index of 3, are months with the lowest UV index.

The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

63.5°F

54.5°F

54.7°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.8mph

7.1mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

26.6

26.3

27.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
La Mesa, NM

Average high temperature in December: 54.5°F

The warmest month (with the highest average high temperature) is June (94.6°F).
The month with the lowest average high temperature is December (54.5°F).

Average low temperature in December: 38.8°F

The month with the highest average low temperature is July (74.7°F).
The coldest month (with the lowest average low temperature) is January (37.2°F).

Average pressure in December
La Mesa, NM

Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in December
La Mesa, NM

Average wind speed in December: 6.5mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).

Average humidity in December
La Mesa, NM

Average humidity in December: 49%

The month with the highest relative humidity is December (49%).
The months with the lowest relative humidity are April and May (22%).

Average rainfall in December
La Mesa, NM

Average rainfall in December: 0.47"

The wettest month (with the highest rainfall) is July (1.38").
The driest month (with the least rainfall) is April (0.08").

Average rainfall days in December
La Mesa, NM

Average rainfall days in December: 4.2 days

The month with the highest number of rainy days is July (11.7 days).
The month with the least rainy days is April (2.3 days).

Average snowfall in December
La Mesa, NM

Average snowfall in December: 0.63"

The months with the highest snowfall are February and December (0.63").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in December
La Mesa, NM

Average snowfall days in December: 1 days

The month with the highest number of snowfall days is December (1 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
La Mesa, NM

Average daylight in December: 10h and 6min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

Average sunshine in December: 7h and 0min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days in December
La Mesa, NM

Average sunshine days in December: 26.3 days

The month with the most sunshine days is April (28.1 days).
The month with the least sunshine days is July (17.2 days).

Average UV index in December
La Mesa, NM

Average UV index in December: 3

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).

Average cloud cover in December
La Mesa, NM

Average cloud cover in December: 19

The month with the most cloud cover is December (Cloud cover 19).
The months with the least cloud cover are May and June (Cloud cover 9).

Average visibility in December
La Mesa, 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).