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 also a wintry month, with an average temperature fluctuating between 21°F (-6.1°C) and 40.3°F (4.6°C).

Temperature

During the coldest month, December, temperatures average a high of 40.3°F (4.6°C) and a low of 21°F (-6.1°C).

Humidity

The average relative humidity in December is 61%.

Rainfall

In Trinidad, in December, it is raining for 3.9 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, in Trinidad, there are 102.5 rainfall days, and 12.95" (329mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Trinidad are January through May, October through December. In Trinidad, in December, during 6.6 snowfall days, 3.07" (78mm) of snow is typically accumulated. 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 in Trinidad, Colorado, 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

The months with the least sunshine are January, February and December, with an average of 6.9h of 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 value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 2 in December interprets into the following advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the coldest month in Trinidad?

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

Is December cold in Trinidad?

Trinidad in December has an average high-temperature of 40.3°F (4.6°C) and an average low-temperature of 21°F (-6.1°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in July is evaluated at 82.4°F (28°C).

What is the average humidity in December in Trinidad?

The average relative humidity in December is 61%.

How many days does it rain in December in Trinidad?

In Trinidad, during December, the rain falls for 3.9 days and regularly aggregates up to 0.51" (13mm) of precipitation.

How many days does it snow in December in Trinidad?

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 in Trinidad?

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

How many hours of daylight does Trinidad have in December?

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

When are sunrise and sunset in December in Trinidad?

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 in Trinidad?

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

How long on average sun shines in December in Trinidad?

In Trinidad, the average sunshine duration in December is 6.9h.

When is the lowest UV index in Trinidad?

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

How high is the UV index in December in Trinidad?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unprotected exposure to UV radiation.
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Trinidad, Colorado, USA

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