December weather forecast
Boyero, CO

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Weather in December

The first month of the winter, December, is also a wintry month in Boyero, Colorado, with an average temperature varying between 39°F (3.9°C) and 22.3°F (-5.4°C).

Temperature

December is the month that records the lowest temperatures, with averages ranging from a high of 39°F (3.9°C) to a low of 22.3°F (-5.4°C).

Humidity

In December, the average relative humidity is 60%.

Rainfall

The month with the least rainfall is December, when the rain falls for 2.5 days and typically collects 0.2" (5mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. In Boyero, in December, during 3.5 snowfall days, 0.75" (19mm) of snow is typically accumulated. Throughout the year, there are 26.7 snowfall days, and 9.02" (229mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 6:53 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:41 pm MST.

Sunshine

In Boyero, the average sunshine in December is 6.8h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 2 in December translates into this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Jun 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

Boyero's coldest month, December, registers temperatures that range from a high of 39°F (3.9°C) to a low of 22.3°F (-5.4°C).

Is it cold during December?

The high-temperature, in December, in Boyero, is 39°F (3.9°C), while the low-temperature averages to 22.3°F (-5.4°C). The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 84.2°F (29°C).

What is the average humidity in December?

The average relative humidity in December is 60%.

What is the driest month?

The month with the least rainfall in Boyero is December, when the rain falls for 2.5 days and typically collects 0.2" (5mm) of precipitation.

How many days does it rain in December?

In Boyero, during December, the rain falls for 2.5 days and regularly aggregates up to 0.2" (5mm) of precipitation.

How much does it snow in December?

In Boyero, Colorado, in December, snow falls for 3.5 days, with typically accumulated 0.75" (19mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 29min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 6:53 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:41 pm MST.

How many hours of sunshine does Boyero have in December?

In December, the average sunshine duration is 6.8h.

What are the months with the lowest UV index in Boyero?

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

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from 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
Boyero, CO

Average temperature in December - Boyero, CO
  • Average high temperature in December: 39°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (39°F).

  • Average low temperature in December: 22.3°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is December (22.3°F).

Average pressure in December
Boyero, CO

Average pressure in December - Boyero, CO
  • Average pressure in December: 30.09"Hg

The months with the highest atmospheric pressure are January and December (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in December
Boyero, CO

Average wind speed in December - Boyero, CO
  • Average wind speed in December: 9.7mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).

Average humidity in December
Boyero, CO

Average humidity in December - Boyero, CO
  • Average humidity in December: 60%

The month with the highest relative humidity is February (63%).
The months with the lowest relative humidity are June and September (46%).

Average rainfall in December
Boyero, CO

Average rainfall in December - Boyero, CO
  • Average rainfall in December: 0.2"

The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is December (0.2").

Average rainfall days in December
Boyero, CO

Average rainfall days in December - Boyero, CO
  • Average rainfall days in December: 2.5 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (1.7 days).

Average snowfall in December
Boyero, CO

Average snowfall in December - Boyero, CO
  • Average snowfall in December: 0.75"

The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Boyero, CO

Average snowfall days in December - Boyero, CO
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in December / Average sunshine in December - Boyero, CO
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 6h and 5min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in December
Boyero, CO

Average sunshine days in December - Boyero, CO
  • Average sunshine days in December: 24.9 days

The month with the most sunshine days is December (24.9 days).
The month with the least sunshine days is July (13.4 days).

Average UV index in December
Boyero, CO

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Boyero, CO

Average cloud cover in December - Boyero, CO
  • Average cloud cover in December: 25

The months with the most cloud cover are February and April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 16).

Average visibility in December
Boyero, CO

Average visibility in December - Boyero, 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).

Boyero, Colorado, USA

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