December weather forecast
Weston, CO

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Weather in December

December, the first month of the winter in Weston, is also an icy month, with temperature in the range of an average low of 21°F (-6.1°C) and an average high of 40.3°F (4.6°C).

Temperature

In Weston, the lowest average temperatures are observed in December, with 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 Weston, in December, during 3.9 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Weston, during the entire year, the rain falls for 102.5 days and collects up to 12.95" (329mm) of precipitation.

Snowfall

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

Daylight

With an average of 9h and 42min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 6:54 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:52 pm MST.

Sunshine

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

UV index

The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. To guard against the harmful effects of the Sun, minimize exposure during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

With average temperatures fluctuating between a high of 40.3°F (4.6°C) and a low of 21°F (-6.1°C), December stands out as the coldest month.

How cold is it in Weston in December?

The high-temperature during December is 40.3°F (4.6°C) and the low-temperature is 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 computed to be 82.4°F (28°C).

What is the average humidity in December?

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

How much does it rain in December?

In December, the rain falls for 3.9 days. Throughout December, 0.51" (13mm) of precipitation is accumulated.

How much does it snow in December?

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

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 42min of daylight.

What is the average length of the day in December?

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

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 6:54 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:52 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 long on average sun shines in December?

The average sunshine duration in December 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 Weston, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk 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
Weston, CO

Average temperature in December - Weston, 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
Weston, CO

Average pressure in December - Weston, 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
Weston, CO

Average wind speed in December - Weston, 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
Weston, CO

Average humidity in December - Weston, 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
Weston, CO

Average rainfall in December - Weston, 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
Weston, CO

Average rainfall days in December - Weston, 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
Weston, CO

Average snowfall in December - Weston, 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
Weston, CO

Average snowfall days in December - Weston, 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
Weston, CO

Average daylight in December / Average sunshine in December - Weston, 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
Weston, CO

Average sunshine days in December - Weston, 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
Weston, CO

Average UV index in December - Weston, 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
Weston, CO

Average cloud cover in December - Weston, 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
Weston, CO

Average visibility in December - Weston, 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).

Weston, Colorado, USA

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