December weather forecast and climate
Broomfield, CO

Neat and well-manicured lawns of a golf course in Broomfield, Colorado, colorful brown and golden trees amid classy homes during the fall
Neat and well-manicured lawns of a golf course in Broomfield, Colorado, colorful brown and golden trees amid classy homes during the fall

Weather in December

The first month of the winter, December, is still a cold month in Broomfield, Colorado, with temperature in the range of an average high of 39.4°F (4.1°C) and an average low of 20.7°F (-6.3°C).

Temperature

The coldest month is December, with an average high-temperature of 39.4°F (4.1°C) and an average low-temperature of 20.7°F (-6.3°C).

Humidity

In December, the average relative humidity in Broomfield is 62%.

Rainfall

In Broomfield, Colorado, during December, the rain falls for 5 days and regularly aggregates up to 0.2" (5mm) of precipitation. Throughout the year, in Broomfield, there are 96.7 rainfall days, and 5.63" (143mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Broomfield, during 5.6 snowfall days, 1.34" (34mm) of snow is typically accumulated. In Broomfield, during the entire year, snow falls for 36.7 days, and aggregates up to 13.98" (355mm) of snow.

Daylight

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

Sunshine

The average sunshine in December is 7h.

UV index

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 2 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Broomfield?

December is the coldest month, with an average high-temperature of 39.4°F (4.1°C) and an average low-temperature of 20.7°F (-6.3°C).

What is the temperature in December in Broomfield?

In December, in Broomfield, the average high-temperature is 39.4°F (4.1°C), and the average low-temperature is 20.7°F (-6.3°C).

What is the average humidity in December in Broomfield?

In Broomfield, Colorado, the average relative humidity in December is 62%.

How much does it rain in Broomfield in December?

In Broomfield, in December, during 5 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

How many days does it snow in December in Broomfield?

In December, in Broomfield, it is snowing for 5.6 days. Throughout December, 1.34" (34mm) of snow is accumulated.

What is the month with the shortest days in Broomfield?

December has the shortest days of the year in Broomfield, Colorado, with an average of 9.4h of daylight.

How many hours of daylight does Broomfield have in December?

In Broomfield, the average length of the day in December is 9.4h.

How long on average sun shines in December in Broomfield?

In Broomfield, the average sunshine in December is 7h.

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

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

What is the UV index reading in December in Broomfield?

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

Average temperature in December
Broomfield, CO

Average temperature in December - Broomfield, CO
  • Average high temperature in December: 39.4°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (39.4°F).

  • Average low temperature in December: 20.7°F

The month with the highest average low temperature is July (59°F).
The coldest months (with the lowest average low temperature) are February and December (20.7°F).

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Average pressure in December
Broomfield, CO

Average pressure in December - Broomfield, CO
  • Average pressure in December: 30.12"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are April and June (29.91").

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Average wind speed in December
Broomfield, CO

Average wind speed in December - Broomfield, CO
  • Average wind speed in December: 6mph

The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest month (with the lowest average wind speed) is September (5.6mph).

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Average humidity in December
Broomfield, CO

Average humidity in December - Broomfield, CO
  • Average humidity in December: 62%

The month with the highest relative humidity is February (67%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in December
Broomfield, CO

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

The wettest months (with the highest rainfall) are May and July (0.87").
The driest month (with the least rainfall) is January (0.16").

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Average rainfall days in December
Broomfield, CO

Average rainfall days in December - Broomfield, CO
  • Average rainfall days in December: 5 days

The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is November (3.5 days).

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Average snowfall in December
Broomfield, CO

Average snowfall in December - Broomfield, CO
  • Average snowfall in December: 1.34"

The month with the highest snowfall is February (2.68").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Broomfield, CO

Average snowfall days in December - Broomfield, CO
  • Average snowfall days in December: 5.6 days

The month with the highest number of snowfall days is February (8.4 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
Broomfield, CO

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

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 7h

Months with the most sunshine are June, July and August (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 6.7h).

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Average sunshine days in December
Broomfield, CO

Average sunshine days in December - Broomfield, CO
  • Average sunshine days in December: 22.5 days

The month with the most sunshine days is November (23.7 days).
The month with the least sunshine days is July (10 days).

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Average UV index in December
Broomfield, CO

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

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

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Average cloud cover in December
Broomfield, CO

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

Months with the most cloud cover are April and May (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 15).

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Average visibility in December
Broomfield, CO

Average visibility in December - Broomfield, 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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