December weather forecast
Silverton, CO

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The view of Silverton, Colorado, via the beauty of the brown and yellow trees in the fall
The view of Silverton, Colorado, via the beauty of the brown and yellow trees in the fall

Weather in December

Timely snowflakes in December usher in a magical end to the year in Silverton. This month, colder than November, witnesses the highest snowfall of the year with 18.15" (461mm) on average. Despite January proving colder and harsher, December sets the stage for intense winter experiences. This month's enchanting winter environment turns Silverton into a perfect Christmas and New Year holiday destination. The magical white scenery, twinkling holiday lights, and festive cheer give a unique allure to the town during December.

Temperature

Silverton reaches its lowest average temperatures in December, measuring 25.7°F (-3.5°C) at the peak and 5.9°F (-14.5°C) at the lowest.

Humidity

In December, the average relative humidity is 82%.

Rainfall

In December, the rain falls for 6.5 days. Throughout December, 2.28" (58mm) of precipitation is accumulated. Throughout the year, there are 107.5 rainfall days, and 26.34" (669mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through December. In Silverton, during December, snow falls for 16.5 days and regularly aggregates up to 18.15" (461mm) of snow. Throughout the year, there are 117.7 snowfall days, and 123.82" (3145mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Silverton, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:26 am and sunset at 5:02 pm MST.

Sunshine

With an average of 5.8h of sunshine, December has the least sunshine of the year.

UV index

December is the month with the lowest UV index in Silverton, Colorado, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 1 in December leads to these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

During the coldest month in Silverton, December, temperatures average a high of 25.7°F (-3.5°C) and a low of 5.9°F (-14.5°C).

How cold is it in December?

The average high-temperature and low-temperature during December are 25.7°F (-3.5°C) and 5.9°F (-14.5°C) respectively.

What is the average humidity in December?

In December, the average relative humidity is 82%.

How much does it rain in December?

In December, the rain falls for 6.5 days. Throughout December, 2.28" (58mm) of precipitation is accumulated.

How many days does it snow in December?

In Silverton, in December, during 16.5 snowfall days, 18.15" (461mm) 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 Silverton have in December?

In Silverton, the average day length in December is 9h and 36min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:08 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:02 pm MST.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 5.8h of sunshine.

How many hours of sunshine does Silverton have in December?

The average sunshine duration in December is 5.8h.

When is the lowest UV index?

December is the month with the lowest UV index in Silverton, with an average maximum UV index of 1.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes 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
Silverton, CO

Average temperature in December - Silverton, CO
  • Average high temperature in December: 25.7°F

The warmest month (with the highest average high temperature) is July (66.7°F).
The month with the lowest average high temperature is December (25.7°F).

  • Average low temperature in December: 5.9°F

The month with the highest average low temperature is July (43.3°F).
The coldest month (with the lowest average low temperature) is January (4.3°F).

Average pressure in December
Silverton, CO

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

The month with the highest atmospheric pressure is January (30.23"Hg).
The months with the lowest atmospheric pressure are April and May (29.92"Hg).

Average wind speed in December
Silverton, CO

Average wind speed in December - Silverton, CO
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in December
Silverton, CO

Average humidity in December - Silverton, CO
  • Average humidity in December: 82%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is June (45%).

Average rainfall in December
Silverton, CO

Average rainfall in December - Silverton, CO
  • Average rainfall in December: 2.28"

The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the least rainfall) is June (1.3").

Average rainfall days in December
Silverton, CO

Average rainfall days in December - Silverton, CO
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is July (21.4 days).
The month with the least rainy days is November (3.1 days).

Average snowfall in December
Silverton, CO

Average snowfall in December - Silverton, CO
  • Average snowfall in December: 18.15"

The month with the highest snowfall is March (19.88").
The month with the least snowfall is July (0.12").

Average snowfall days in December
Silverton, CO

Average snowfall days in December - Silverton, CO
  • Average snowfall days in December: 16.5 days

The month with the highest number of snowfall days is February (17.3 days).
The month with the least snowfall days is July (0.3 days).

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

Average daylight in December / Average sunshine in December - Silverton, 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: 5h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in December
Silverton, CO

Average sunshine days in December - Silverton, CO
  • Average sunshine days in December: 13.7 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (8.1 days).

Average UV index in December
Silverton, CO

Average UV index in December - Silverton, CO
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 4).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Silverton, CO

Average cloud cover in December - Silverton, CO
  • Average cloud cover in December: 39

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 14).

Average visibility in December
Silverton, CO

Average visibility in December - Silverton, CO
  • Average visibility in December: 4mi

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

Silverton, Colorado, USA

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