December weather forecast and climate
Silt, CO

Weather in December

The first month of the winter, December, is also a subzero cold month in Silt, Colorado, with average temperature ranging between max 30.7°F (-0.7°C) and min 14.9°F (-9.5°C).

Temperature

In December, the average high-temperature decreases, from a wintry 42.1°F (5.6°C) in November, to a subzero cold 30.7°F (-0.7°C). In Silt, in December, the average low-temperature is 14.9°F (-9.5°C).

Humidity

The average relative humidity in Silt is 79%.

Rainfall

In Silt, during December, the rain falls for 8.4 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in Silt, Colorado, there are 107.7 rainfall days, and 11.89" (302mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Silt are January through May, October through December. In December, in Silt, it is snowing for 11 days. Throughout December, 7.05" (179mm) of snow is accumulated. Throughout the year, there are 58.6 snowfall days, and 36.85" (936mm) of snow is accumulated.

Daylight

With an average of 9.4h of daylight, December has the shortest days of the year in Silt.

Sunshine

The average sunshine in Silt is 6.4h.

UV index

Months with the lowest UV index in Silt, Colorado, are January through March, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Silt?

The average high-temperature, in December, in Silt, is 30.7°F (-0.7°C), while the average low-temperature is 14.9°F (-9.5°C).

What is the average humidity in December in Silt?

The average relative humidity in December in Silt, Colorado, is 79%.

How many days does it rain in December in Silt?

In Silt, Colorado, in December, during 8.4 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

How many days does it snow in December in Silt?

In Silt, Colorado, in December, during 11 snowfall days, 7.05" (179mm) of snow is typically accumulated.

What is the month with the shortest days in Silt?

The month with the shortest days in Silt, Colorado, is December, with an average of 9.4h of daylight.

How many hours of daylight does Silt have in December?

The average length of the day in December in Silt is 9.4h.

How long on average sun shines in December in Silt?

In December, the average sunshine in Silt is 6.4h.

What is the month with the lowest UV index in Silt?

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

What is the UV index intensity in December in Silt?

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

Average temperature in December
Silt, CO

Average temperature in December - Silt, CO
  • Average high temperature in December: 30.7°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in December: 14.9°F

The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is January (12°F).

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Average pressure in December
Silt, CO

Average pressure in December - Silt, CO
  • Average pressure in December: 30.2"

The month with the highest atmospheric pressure is January (30.27").
The month with the lowest atmospheric pressure is May (29.93").

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Average wind speed in December
Silt, CO

Average wind speed in December - Silt, CO
  • Average wind speed in December: 4.2mph

The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest month (with the lowest average wind speed) is January (4.1mph).

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Average humidity in December
Silt, CO

Average humidity in December - Silt, CO
  • Average humidity in December: 79%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is June (43%).

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Average rainfall in December
Silt, CO

Average rainfall in December - Silt, CO
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is April (1.57").
The driest month (with the least rainfall) is September (0.51").

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Average rainfall days in December
Silt, CO

Average rainfall days in December - Silt, CO
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is April (14 days).
The month with the least rainy days is June (5.9 days).

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Average snowfall in December
Silt, CO

Average snowfall in December - Silt, CO
  • Average snowfall in December: 7.05"

The month with the highest snowfall is February (8.74").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Silt, CO

Average snowfall days in December - Silt, CO
  • Average snowfall days in December: 11 days

The month with the highest number of snowfall days is January (13 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Silt, CO
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 6.4h

Months with the most sunshine are June, July and August (Average sunshine: 11.9h).
The month with the least sunshine is January (Average sunshine: 6.1h).

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Average sunshine days in December
Silt, CO

Average sunshine days in December - Silt, CO
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is June (20.7 days).
The month with the least sunshine days is April (11.7 days).

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Average UV index in December
Silt, CO

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

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

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Average cloud cover in December
Silt, CO

Average cloud cover in December - Silt, CO
  • Average cloud cover in December: 34

The month with the most cloud cover is February (Cloud cover 39).
Months with the least cloud cover are June and September (Cloud cover 12).

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Average visibility in December
Silt, CO

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

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).

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