December weather forecast
Trinidad, CO

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A unique rocky and mountainous region of Trinidad in Colorado
A unique rocky and mountainous region of Trinidad in Colorado

Weather in December

December, the first month of the winter in Trinidad, is still a cold month, with an average temperature varying between 40.3°F (4.6°C) and 21°F (-6.1°C).

Temperature

December, marked by an average high-temperature of 40.3°F (4.6°C) and a low-temperature of 21°F (-6.1°C), is the coldest month.

Humidity

In Trinidad, the average relative humidity in December is 61%.

Rainfall

In December, the rain falls for 3.9 days. Throughout December, 0.51" (13mm) of precipitation is accumulated. In Trinidad, Colorado, during the entire year, the rain falls for 102.5 days and collects up to 12.95" (329mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Trinidad, during December, snow falls for 6.6 days and regularly aggregates up to 3.07" (78mm) of snow. In Trinidad, during the entire year, snow falls for 37.4 days and aggregates up to 23.11" (587mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 6:53 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:11 am and sunset at 4:51 pm MST.

Sunshine

January, February and December, with an average of 6.9h of sunshine, are months with the least sunshine.

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 of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Jul 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

December stands out as Trinidad's coldest month, with an average high-temperature of 40.3°F (4.6°C) and a low-temperature of 21°F (-6.1°C).

Is December cold?

The average high-temperature, in December, in Trinidad, is 40.3°F (4.6°C), while the average low-temperature is 21°F (-6.1°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in July is appraised at 82.4°F (28°C).

What is the average humidity in December?

The average relative humidity in December is 61%.

How many days does it rain in December?

In Trinidad, in December, it is raining for 3.9 days, with typically 0.51" (13mm) of accumulated precipitation.

How many days does it snow in December?

In Trinidad, in December, snow falls for 6.6 days, with typically accumulated 3.07" (78mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 42min of daylight.

What is the average length of the day in December?

In Trinidad, the average day length in December is 9h and 40min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 6:53 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:51 pm MST.

What are the months with the least sunshine?

The months with the least sunshine are January, February and December, with an average of 6.9h of sunshine.

How many hours of sunshine does Trinidad have in December?

The average sunshine duration in December in Trinidad is 6.9h.

What are the months with 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.

How high is the UV index in December?

In Trinidad, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe 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
Trinidad, CO

Average temperature in December - Trinidad, CO
  • Average high temperature in December: 40.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (40.3°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
Trinidad, CO

Average pressure in December - Trinidad, CO
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is April (29.87"Hg).

Average wind speed in December
Trinidad, CO

Average wind speed in December - Trinidad, CO
  • Average wind speed in December: 8mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (7mph).

Average humidity in December
Trinidad, CO

Average humidity in December - Trinidad, CO
  • 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
Trinidad, CO

Average rainfall in December - Trinidad, CO
  • Average rainfall in December: 0.51"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is November (0.39").

Average rainfall days in December
Trinidad, CO

Average rainfall days in December - Trinidad, CO
  • Average rainfall days in December: 3.9 days

The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is November (2.5 days).

Average snowfall in December
Trinidad, CO

Average snowfall in December - Trinidad, CO
  • Average snowfall in December: 3.07"

The month with the highest snowfall is January (3.78").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Trinidad, CO

Average snowfall days in December - Trinidad, CO
  • Average snowfall days in December: 6.6 days

The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Trinidad, CO

Average daylight in December / Average sunshine in December - Trinidad, CO
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 6h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).

Average sunshine days in December
Trinidad, CO

Average sunshine days in December - Trinidad, CO
  • Average sunshine days in December: 23 days

The month with the most sunshine days is November (24.1 days).
The month with the least sunshine days is July (7.8 days).

Average UV index in December
Trinidad, CO

Average UV index in December - Trinidad, CO
  • 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
Trinidad, CO

Average cloud cover in December - Trinidad, CO
  • Average cloud cover in December: 21

The months with the most cloud cover are February and April (Cloud cover 23).
The month with the least cloud cover is October (Cloud cover 15).

Average visibility in December
Trinidad, CO

Average visibility in December - Trinidad, CO
  • 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).

Trinidad, Colorado, USA

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