December weather forecast
Mills, NM

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Weather in December

The first month of the winter, December, is also an icy month in Mills, New Mexico, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 21°F (-6.1°C).

Temperature

Mills's December weather reaches an average high of 40.1°F (4.5°C) and an average low of 21°F (-6.1°C), making it the coldest month.

Humidity

The average relative humidity in December is 61%.

Rainfall

In December, the rain falls for 4.6 days. Throughout December, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 93.8 rainfall days, and 12.32" (313mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In Mills, in December, snow falls for 6.8 days, with typically accumulated 3.39" (86mm) of snow. Throughout the year, there are 40.2 snowfall days, and 24.41" (620mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 6:49 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:07 am and sunset at 4:53 pm MST.

Sunshine

The average sunshine in December is 7.1h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

The coldest month is December, with an average high-temperature of 40.1°F (4.5°C) and an average low-temperature of 21°F (-6.1°C).

Is December cold?

In December, in Mills, the average high-temperature is 40.1°F (4.5°C), and the average low-temperature is 21°F (-6.1°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 82.4°F (28°C).

What is the average humidity in December?

In December, the average relative humidity is 61%.

How many days does it rain in December?

In Mills, in December, during 4.6 rainfall days, 0.51" (13mm) of precipitation is typically accumulated.

How many days does it snow in December?

In December, it is snowing for 6.8 days. Throughout December, 3.39" (86mm) of snow is accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 48min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 45min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 6:49 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 4:53 pm MST.

How long on average sun shines in December?

In December, the average sunshine duration is 7.1h.

When is the lowest UV index?

The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2.

What is the UV index intensity in December in Mills?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Mills, NM

Average temperature in December - Mills, NM
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is December (40.1°F).

  • Average low temperature in December: 21°F

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (21°F).

Average pressure in December
Mills, NM

Average pressure in December - Mills, 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 (29.87"Hg).

Average wind speed in December
Mills, NM

Average wind speed in December - Mills, NM
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity in December
Mills, NM

Average humidity in December - Mills, NM
  • Average humidity in December: 61%

The month with the highest relative humidity is January (62%).
The month with the lowest relative humidity is June (41%).

Average rainfall in December
Mills, NM

Average rainfall in December - Mills, NM
  • Average rainfall in December: 0.51"

The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is November (0.39").

Average rainfall days in December
Mills, NM

Average rainfall days in December - Mills, NM
  • Average rainfall days in December: 4.6 days

The month with the highest number of rainy days is August (16.1 days).
The month with the least rainy days is November (2.7 days).

Average snowfall in December
Mills, NM

Average snowfall in December - Mills, NM
  • Average snowfall in December: 3.39"

The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Mills, NM

Average snowfall days in December - Mills, NM
  • Average snowfall days in December: 6.8 days

The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Mills, NM

Average daylight in December / Average sunshine in December - Mills, NM
  • Average daylight in December: 9h and 5min

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 1min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 7h and 0min).

Average sunshine days in December
Mills, NM

Average sunshine days in December - Mills, NM
  • Average sunshine days in December: 22.8 days

The month with the most sunshine days is November (24.4 days).
The month with the least sunshine days is July (9.9 days).

Average UV index in December
Mills, NM

Average UV index in December - Mills, 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, October, November and December (UV index 2).

Average cloud cover in December
Mills, NM

Average cloud cover in December - Mills, NM
  • Average cloud cover in December: 19

The months with the most cloud cover are February, April and July (Cloud cover 20).
The months with the least cloud cover are June, October and November (Cloud cover 14).

Average visibility in December
Mills, NM

Average visibility in December - Mills, 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).

Mills, New Mexico, USA

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