December weather forecast
Larkspur, CO

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Weather in December

The first month of the winter, December, is also a wintry month in Larkspur, Colorado, with an average temperature varying between 36°F (2.2°C) and 17.1°F (-8.3°C).

Temperature

The coldest period is December, when temperatures fluctuate between an average high of 36°F (2.2°C) and a low of 17.1°F (-8.3°C).

Humidity

The average relative humidity in December is 65%.

Rainfall

The months with the least rainfall are January, November and December Rain falls for 4.5 days and accumulates 0.63" (16mm) of rain.

Snowfall

January through June, September through December are months with snowfall. In Larkspur, in December, snow falls for 10.5 days, with typically accumulated 4.57" (116mm) of snow. Throughout the year, there are 68.6 snowfall days, and 50.51" (1283mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:00 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:46 pm MST.

Sunshine

In December, the average sunshine is 6.8h.

UV index

The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high UV index of 2 in December translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. To protect against the Sun's most potent rays, avoid direct exposure around midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

Larkspur's December weather reaches an average high of 36°F (2.2°C) and an average low of 17.1°F (-8.3°C), making it the coldest month.

How cold is it in Larkspur in December?

The high-temperature during December is 36°F (2.2°C) and the low-temperature is 17.1°F (-8.3°C).

What is the average humidity in December?

The average relative humidity in December is 65%.

What is the driest month in Larkspur?

January, November and December are months with the least rain when the rain falls for 4.5 days and typically aggregates up to 0.63" (16mm) of rain.

How much does it rain in December?

In Larkspur, in December, it is raining for 4.5 days, with typically 0.63" (16mm) of accumulated precipitation.

How much does it snow in Larkspur in December?

In December, it is snowing for 10.5 days. Throughout December, 4.57" (116mm) of snow is accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

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

In Larkspur, the average day length in December is 9h and 28min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:00 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:46 pm MST.

How many hours of sunshine does Larkspur have in December?

In December, the average sunshine duration is 6.8h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December in Larkspur?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
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
Larkspur, CO

Average temperature in December - Larkspur, CO
  • Average high temperature in December: 36°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is December (36°F).

  • Average low temperature in December: 17.1°F

The month with the highest average low temperature is July (54°F).
The coldest month (with the lowest average low temperature) is December (17.1°F).

Average pressure in December
Larkspur, CO

Average pressure in December - Larkspur, CO
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).

Average wind speed in December
Larkspur, CO

Average wind speed in December - Larkspur, CO
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in December
Larkspur, CO

Average humidity in December - Larkspur, CO
  • Average humidity in December: 65%

The month with the highest relative humidity is February (69%).
The month with the lowest relative humidity is June (48%).

Average rainfall in December
Larkspur, CO

Average rainfall in December - Larkspur, CO
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is May (3.31").
The driest months (with the least rainfall) are January, November and December (0.63").

Average rainfall days in December
Larkspur, CO

Average rainfall days in December - Larkspur, CO
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (3.6 days).

Average snowfall in December
Larkspur, CO

Average snowfall in December - Larkspur, CO
  • Average snowfall in December: 4.57"

The month with the highest snowfall is April (9.29").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Larkspur, CO

Average snowfall days in December - Larkspur, CO
  • Average snowfall days in December: 10.5 days

The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in December / Average sunshine in December - Larkspur, 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 and July (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).

Average sunshine days in December
Larkspur, CO

Average sunshine days in December - Larkspur, CO
  • Average sunshine days in December: 19.4 days

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is May (9.5 days).

Average UV index in December
Larkspur, CO

Average UV index in December - Larkspur, 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).

Average cloud cover in December
Larkspur, CO

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

The months with the most cloud cover are April and May (Cloud cover 30).
The months with the least cloud cover are September, October and November (Cloud cover 19).

Average visibility in December
Larkspur, CO

Average visibility in December - Larkspur, 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).

Larkspur, Colorado, USA

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