December weather forecast
Mosca, CO

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Weather in December

The first month of the winter, December, is also a wintry month in Mosca, Colorado, with an average temperature fluctuating between 33.8°F (1°C) and 15.4°F (-9.2°C).

Temperature

As December arrives, Mosca's weather displays a decrease in high-temperatures, transitioning from November's chilly 46.2°F (7.9°C) to a cold 33.8°F (1°C). During December, the average low-temperature in Mosca is a freezing cold 15.4°F (-9.2°C).

Humidity

The average relative humidity in December in Mosca, Colorado, is 71%.

Rainfall

November and December are months with the least rain in Mosca, Colorado, when the rain falls for 4.4 days and typically aggregates up to 0.31" (8mm) of rain.

Snowfall

Months with snowfall are January through May, October through December. In Mosca, in December, snow falls for 6.8 days, with typically accumulated 2.48" (63mm) of snow. Throughout the year, in Mosca, there are 37 snowfall days, and 20.08" (510mm) of snow is accumulated.

Daylight

With an average of 9h and 36min of daylight, December has the shortest days of the year in Mosca, Colorado.
On the first day of the month, sunrise is at 7:00 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:55 pm MST.

Sunshine

The average sunshine in December is 7h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Mosca, Colorado. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 in December translates into these instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

How cold is it in Mosca in December?

The average high-temperature and low-temperature during December are 33.8°F (1°C) and 15.4°F (-9.2°C) respectively. In July, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is evaluated at 82.4°F (28°C).

What is the average humidity in December in Mosca?

In December, the average relative humidity in Mosca is 71%.

What is the driest month in Mosca?

The months with the least rainfall in Mosca are November and December Rain falls for 4.4 days and accumulates 0.31" (8mm) of rain.

How much does it rain in Mosca in December?

In Mosca, Colorado, in December, during 4.4 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

How many days does it snow in December in Mosca?

In Mosca, Colorado, in December, during 6.8 snowfall days, 2.48" (63mm) of snow is typically accumulated.

What is the month with the shortest days in Mosca?

The month with the shortest days is December, with an average of 9h and 36min of daylight.

How many hours of daylight does Mosca have in December?

The average day length in December in Mosca, Colorado, is 9h and 37min.

When is the sunrise / sunset in December in Mosca?

On the first day of December in Mosca, Colorado, sunrise is at 7:00 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:55 pm MST.

How long on average sun shines in December in Mosca?

In Mosca, the average sunshine duration in December is 7h.

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

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

What is the UV index reading in December in Mosca?

In December, the average daily maximum UV index in Mosca is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Mosca, CO

Average temperature in December - Mosca, CO
  • Average high temperature in December: 33.8°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in December: 15.4°F

The month with the highest average low temperature is July (50.5°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).

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Average pressure in December
Mosca, CO

Average pressure in December - Mosca, CO
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).

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Average wind speed in December
Mosca, CO

Average wind speed in December - Mosca, CO
  • Average wind speed in December: 4.8mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in December
Mosca, CO

Average humidity in December - Mosca, CO
  • Average humidity in December: 71%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is June (37%).

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Average rainfall in December
Mosca, CO

Average rainfall in December - Mosca, CO
  • Average rainfall in December: 0.31"

The wettest month (with the highest rainfall) is July (1.18").
The driest months (with the least rainfall) are November and December (0.31").

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Average rainfall days in December
Mosca, CO

Average rainfall days in December - Mosca, CO
  • Average rainfall days in December: 4.4 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is November (2.1 days).

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Average snowfall in December
Mosca, CO

Average snowfall in December - Mosca, CO
  • Average snowfall in December: 2.48"

The months with the highest snowfall are January and March (3.5").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Mosca, CO

Average snowfall days in December - Mosca, CO
  • Average snowfall days in December: 6.8 days

The month with the highest number of snowfall days is February (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
Mosca, CO

Average daylight in December / Average sunshine in December - Mosca, 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: 7h and 0min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 48min).

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Average sunshine days in December
Mosca, CO

Average sunshine days in December - Mosca, CO
  • Average sunshine days in December: 23.3 days

The month with the most sunshine days is November (25.8 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index in December
Mosca, CO

Average UV index in December - Mosca, 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, October, November and December (UV index 2).

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Average cloud cover in December
Mosca, CO

Average cloud cover in December - Mosca, CO
  • Average cloud cover in December: 22

The months with the most cloud cover are January and February (Cloud cover 25).
The months with the least cloud cover are June, September and October (Cloud cover 12).

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Average visibility in December
Mosca, CO

Average visibility in December - Mosca, CO
  • Average visibility in December: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

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Mosca, Colorado, USA

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