December weather forecast
Trimble, CO

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Weather in December

The first month of the winter, December, is also a wintry month in Trimble, Colorado, with an average temperature varying between 32.4°F (0.2°C) and 14.7°F (-9.6°C).

Temperature

As December begins, there is a decrease in the average high-temperature, falling from a frosty 43.5°F (6.4°C) in November to a cold 32.4°F (0.2°C). Trimble throughout December, experiences an average nighttime temperature of 14.7°F (-9.6°C).

Humidity

In Trimble, Colorado, the average relative humidity in December is 76%.

Rainfall

In Trimble, in December, during 5.5 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Trimble, during the entire year, the rain falls for 113.4 days and collects up to 20.63" (524mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Trimble, in December, during 12.2 snowfall days, 14.49" (368mm) of snow is typically accumulated. Throughout the year, there are 69.1 snowfall days, and 74.06" (1881mm) of snow is accumulated.

Daylight

The month with the shortest days in Trimble, Colorado, is December, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:53 pm. On the last day of December, in Trimble, sunrise is at 7:25 am and sunset at 5:03 pm MST.

Sunshine

The average sunshine in December is 6.2h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Around midday, solar radiation is most harmful; hence, exposure should be limited. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In Trimble, in December, the average high-temperature is 32.4°F (0.2°C), and the average low-temperature is 14.7°F (-9.6°C).

What is the average humidity in December?

The average relative humidity in December is 76%.

How much does it rain in December?

In December, the rain falls for 5.5 days. Throughout December, 1.81" (46mm) of precipitation is accumulated.

How many days does it snow in December?

In Trimble, in December, during 12.2 snowfall days, 14.49" (368mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 9h and 36min of daylight, December has the shortest days of the year.

How many hours of daylight does Trimble have in December?

In Trimble, the average day length in December is 9h and 38min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:03 pm MST.

How many hours of sunshine does Trimble have in December?

The average sunshine duration in December is 6.2h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In Trimble, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's 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
Trimble, CO

Average temperature in December - Trimble, CO
  • Average high temperature in December: 32.4°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in December: 14.7°F

The month with the highest average low temperature is July (51.6°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).

Average pressure in December
Trimble, CO

Average pressure in December - Trimble, CO
  • Average pressure in December: 30.16"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.91"Hg).

Average wind speed in December
Trimble, CO

Average wind speed in December - Trimble, CO
  • Average wind speed in December: 4.9mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is December (4.9mph).

Average humidity in December
Trimble, CO

Average humidity in December - Trimble, CO
  • Average humidity in December: 76%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (37%).

Average rainfall in December
Trimble, CO

Average rainfall in December - Trimble, CO
  • Average rainfall in December: 1.81"

The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is June (0.94").

Average rainfall days in December
Trimble, CO

Average rainfall days in December - Trimble, CO
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is July (21.5 days).
The month with the least rainy days is November (3.4 days).

Average snowfall in December
Trimble, CO

Average snowfall in December - Trimble, CO
  • Average snowfall in December: 14.49"

The month with the highest snowfall is February (14.57").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Trimble, CO

Average snowfall days in December - Trimble, CO
  • Average snowfall days in December: 12.2 days

The month with the highest number of snowfall days is February (12.8 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in December / Average sunshine in December - Trimble, 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 36min).

  • Average sunshine in December: 6h and 1min

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

Average sunshine days in December
Trimble, CO

Average sunshine days in December - Trimble, CO
  • Average sunshine days in December: 18.1 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (6.9 days).

Average UV index in December
Trimble, CO

Average UV index in December - Trimble, CO
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in December
Trimble, CO

Average cloud cover in December - Trimble, CO
  • Average cloud cover in December: 32

The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is June (Cloud cover 12).

Average visibility in December
Trimble, CO

Average visibility in December - Trimble, CO
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Trimble, Colorado, USA

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