December weather forecast and climate
Arapahoe, CO

Weather in December

The first month of the winter, December, is still a cold month in Arapahoe, Colorado, with average temperature varying between 41.2°F (5.1°C) and 24.1°F (-4.4°C).

Temperature

December is the coldest month, with an average high-temperature of 41.2°F (5.1°C) and an average low-temperature of 24.1°F (-4.4°C).

Humidity

January, February and December, with an average relative humidity of 61%, are most humid months in Arapahoe.

Rainfall

In December, in Arapahoe, the rain falls for 3.8 days. Throughout December, 0.43" (11mm) of precipitation is accumulated. In Arapahoe, during the entire year, the rain falls for 108.3 days and collects up to 13.39" (340mm) of precipitation.

Snowfall

Months with snowfall in Arapahoe are January through May, October through December. In Arapahoe, Colorado, in December, during 6 snowfall days, 1.42" (36mm) of snow is typically accumulated. In Arapahoe, during the entire year, snow falls for 34 days, and aggregates up to 11.57" (294mm) of snow.

Daylight

With an average of 9.5h of daylight, December has the shortest days of the year in Arapahoe.

Sunshine

The average sunshine is 6.6h.

UV index

Months with the lowest UV index in Arapahoe are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Arapahoe?

With an average high-temperature of 41.2°F (5.1°C) and an average low-temperature of 24.1°F (-4.4°C), December is the coldest month.

What is the temperature in December in Arapahoe?

In Arapahoe, in December, the average high-temperature is 41.2°F (5.1°C), and the average low-temperature is 24.1°F (-4.4°C).

What is the most humid month in Arapahoe?

Months with the highest humidity in Arapahoe are January, February and December, with an average relative humidity of 61%.

What is the average humidity in December in Arapahoe?

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

How much does it rain in Arapahoe in December?

In December, in Arapahoe, Colorado, the rain falls for 3.8 days. Throughout December, 0.43" (11mm) of precipitation is accumulated.

How many days does it snow in December in Arapahoe?

In Arapahoe, during December, snow falls for 6 days and regularly aggregates up to 1.42" (36mm) of snow.

What is the month with the shortest days in Arapahoe?

With an average of 9.5h of daylight, December has the shortest days of the year in Arapahoe.

What is the average length of the day in December in Arapahoe?

In December, the average length of the day is 9.5h.

How long on average sun shines in December in Arapahoe?

In December, the average sunshine is 6.6h.

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

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December in Arapahoe?

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

Average temperature in December
Arapahoe, CO

Average temperature in December - Arapahoe, CO
  • Average high temperature in December: 41.2°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is December (41.2°F).

  • Average low temperature in December: 24.1°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).

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Average pressure in December
Arapahoe, CO

Average pressure in December - Arapahoe, CO
  • Average pressure in December: 30.1"

Months with the highest atmospheric pressure are January and December (30.1").
The month with the lowest atmospheric pressure is June (29.8").

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Average wind speed in December
Arapahoe, CO

Average wind speed in December - Arapahoe, CO
  • Average wind speed in December: 11.1mph

The windiest month (with the highest average wind speed) is April (13mph).
The calmest month (with the lowest average wind speed) is August (10.3mph).

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Average humidity in December
Arapahoe, CO

Average humidity in December - Arapahoe, CO
  • Average humidity in December: 61%

Months with the highest relative humidity are January, February and December (61%).
Months with the lowest relative humidity are June and July (48%).

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Average rainfall in December
Arapahoe, CO

Average rainfall in December - Arapahoe, CO
  • Average rainfall in December: 0.43"

The wettest months (with the highest rainfall) are May and July (1.93").
The driest month (with the least rainfall) is January (0.39").

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Average rainfall days in December
Arapahoe, CO

Average rainfall days in December - Arapahoe, CO
  • Average rainfall days in December: 3.8 days

The month with the highest number of rainy days is July (15 days).
Months with the least rainy days are February and December (3.8 days).

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Average snowfall in December
Arapahoe, CO

Average snowfall in December - Arapahoe, CO
  • Average snowfall in December: 1.42"

The month with the highest snowfall is February (2.28").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Arapahoe, CO

Average snowfall days in December - Arapahoe, CO
  • Average snowfall days in December: 6 days

The month with the highest number of snowfall days is February (7.7 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
Arapahoe, CO

Average daylight in December / Average sunshine in December - Arapahoe, CO
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 6.6h

The month with the most sunshine is August (Average sunshine: 11.7h).
The month with the least sunshine is February (Average sunshine: 6.4h).

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Average sunshine days in December
Arapahoe, CO

Average sunshine days in December - Arapahoe, CO
  • Average sunshine days in December: 22.2 days

The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is July (11.9 days).

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Average UV index in December
Arapahoe, CO

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

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Arapahoe, CO

Average cloud cover in December - Arapahoe, CO
  • Average cloud cover in December: 27

The month with the most cloud cover is February (Cloud cover 30).
The month with the least cloud cover is September (Cloud cover 17).

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Average visibility in December
Arapahoe, CO

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

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

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