December weather forecast
Lamar, CO

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Weather in December

The first month of the winter, December, is also a frosty month in Lamar, Colorado, with an average temperature ranging between max 43.7°F (6.5°C) and min 26.4°F (-3.1°C).

Temperature

December is Lamar's coldest month, registering average high temperatures of 43.7°F (6.5°C) and lows of 26.4°F (-3.1°C).

Humidity

In December, the average relative humidity in Lamar is 57%.

Rainfall

In December, the rain falls for 3.7 days. Throughout December, 0.35" (9mm) of precipitation is accumulated. In Lamar, during the entire year, the rain falls for 79.5 days and collects up to 8.9" (226mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Lamar, during December, snow falls for 3.5 days and regularly aggregates up to 1.02" (26mm) of snow. Throughout the year, there are 19.6 snowfall days, and 7.09" (180mm) of snow is accumulated.

Daylight

With an average of 9h and 36min of daylight, December has the shortest days of the year in Lamar.
On the first day of December, sunrise is at 6:48 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 4:41 pm MST.

Sunshine

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

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: An average maximum UV index of 2 in December leads to these recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Lamar?

December proves to be the coldest month in Lamar, Colorado, recording an average maximum temperature of 43.7°F (6.5°C) and a minimum temperature of 26.4°F (-3.1°C).

Is it cold in Lamar during December?

December temperatures in Lamar vary between a high-temperature of 43.7°F (6.5°C) and a low-temperature of 26.4°F (-3.1°C). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in September is computed to be 82.4°F (28°C).

What is the average humidity in December in Lamar?

In Lamar, the average relative humidity in December is 57%.

How many days does it rain in December in Lamar?

In December, in Lamar, Colorado, the rain falls for 3.7 days. Throughout December, 0.35" (9mm) of precipitation is accumulated.

How much does it snow in Lamar in December?

In Lamar, in December, during 3.5 snowfall days, 1.02" (26mm) of snow is typically accumulated.

What is the month with the shortest days in Lamar?

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

How many hours of daylight does Lamar have in December?

In Lamar, the average day length in December is 9h and 34min.

What time are sunrise and sunset in December in Lamar?

In December, on the first day of the month, sunrise is at 6:48 am and sunset at 4:31 pm. On the last day of the month, in Lamar, sunrise is at 7:06 am and sunset at 4:41 pm MST.

How long on average sun shines in December in Lamar?

In December, the average sunshine duration in Lamar is 6.8h.

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

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

What is the UV index intensity in December in Lamar?

In Lamar, Colorado, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes 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
Lamar, CO

Average temperature in December - Lamar, CO
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is December (43.7°F).

  • Average low temperature in December: 26.4°F

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is December (26.4°F).

Average pressure in December
Lamar, CO

Average pressure in December - Lamar, CO
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).

Average wind speed in December
Lamar, CO

Average wind speed in December - Lamar, CO
  • Average wind speed in December: 9.1mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is January (8.9mph).

Average humidity in December
Lamar, CO

Average humidity in December - Lamar, CO
  • Average humidity in December: 57%

The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (40%).

Average rainfall in December
Lamar, CO

Average rainfall in December - Lamar, CO
  • Average rainfall in December: 0.35"

The wettest month (with the highest rainfall) is July (1.54").
The driest month (with the least rainfall) is November (0.28").

Average rainfall days in December
Lamar, CO

Average rainfall days in December - Lamar, CO
  • Average rainfall days in December: 3.7 days

The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is November (2.5 days).

Average snowfall in December
Lamar, CO

Average snowfall in December - Lamar, CO
  • Average snowfall in December: 1.02"

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

Average snowfall days in December
Lamar, CO

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

The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Lamar, CO
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 6h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in December
Lamar, CO

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

The month with the most sunshine days is November (25.2 days).
The month with the least sunshine days is July (17.3 days).

Average UV index in December
Lamar, CO

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

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).

Average cloud cover in December
Lamar, CO

Average cloud cover in December - Lamar, CO
  • Average cloud cover in December: 23

The months with the most cloud cover are February and April (Cloud cover 25).
The months with the least cloud cover are June and September (Cloud cover 14).

Average visibility in December
Lamar, CO

Average visibility in December - Lamar, 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).

Lamar, Colorado, USA

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