December weather forecast and climate
Nelson, CO

Weather in December

The first month of the winter, December, is still a cold month in Nelson, Colorado, with average temperature ranging between max 38.7°F (3.7°C) and min 22.5°F (-5.3°C).

Temperature

With an average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 22.5°F (-5.3°C), December is the coldest month.

Humidity

In Nelson, the average relative humidity in December is 63%.

Rainfall

January and December are months with the least rain when the rain falls for 5 days and typically aggregates up to 0.39" (10mm) of rain.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 5.8 days. Throughout December, 1.65" (42mm) of snow is accumulated. Throughout the year, in Nelson, there are 33.8 snowfall days, and 12.83" (326mm) of snow is accumulated.

Daylight

The month with the shortest days in Nelson is December, with an average of 9.4h of daylight.

Sunshine

Months with the least sunshine in Nelson are February and December, with an average of 6.5h of sunshine.

UV index

Months with the lowest UV index in Nelson, Colorado, 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 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. 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 Nelson?

December is the coldest month in Nelson, with an average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 22.5°F (-5.3°C).

What is the temperature in December in Nelson?

In Nelson, Colorado, in December, the average high-temperature is 38.7°F (3.7°C), and the average low-temperature is 22.5°F (-5.3°C).

What is the average humidity in December in Nelson?

The average relative humidity in December in Nelson, Colorado, is 63%.

How much does it rain in Nelson in December?

In Nelson, in December, during 5 rainfall days, 0.39" (10mm) of precipitation is typically accumulated.

What is the driest month in Nelson?

January and December are months with the least rain in Nelson, Colorado, when the rain falls for 5 days and typically aggregates up to 0.39" (10mm) of rain.

How much does it snow in Nelson in December?

In December, in Nelson, it is snowing for 5.8 days. Throughout December, 1.65" (42mm) of snow is accumulated.

What is the month with the shortest days in Nelson?

The month with the shortest days in Nelson is December, with an average of 9.4h of daylight.

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

The average length of the day in December is 9.4h.

What is the month with the least sunshine in Nelson?

February and December, with an average of 6.5h of sunshine, are months with the least sunshine in Nelson, Colorado.

How long on average sun shines in December in Nelson?

In December, the average sunshine in Nelson, Colorado, is 6.5h.

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

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

How high is the UV index in December in Nelson?

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

Average temperature in December
Nelson, CO

Average temperature in December - Nelson, CO
  • Average high temperature in December: 38.7°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (38.7°F).

  • Average low temperature in December: 22.5°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is December (22.5°F).

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Average pressure in December
Nelson, CO

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

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in December
Nelson, CO

Average wind speed in December - Nelson, CO
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is December (7.8mph).

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Average humidity in December
Nelson, CO

Average humidity in December - Nelson, CO
  • Average humidity in December: 63%

The month with the highest relative humidity is January (64%).
Months with the lowest relative humidity are August and September (45%).

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Average rainfall in December
Nelson, CO

Average rainfall in December - Nelson, CO
  • Average rainfall in December: 0.39"

The wettest month (with the highest rainfall) is May (2.2").
The driest months (with the least rainfall) are January and December (0.39").

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Average rainfall days in December
Nelson, CO

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

The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (2.9 days).

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Average snowfall in December
Nelson, CO

Average snowfall in December - Nelson, CO
  • Average snowfall in December: 1.65"

The month with the highest snowfall is February (2.64").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Nelson, CO

Average snowfall days in December - Nelson, CO
  • Average snowfall days in December: 5.8 days

The month with the highest number of snowfall days is February (8.1 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
Nelson, CO

Average daylight in December / Average sunshine in December - Nelson, 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: 6.5h

Months with the most sunshine are June, July and August (Average sunshine: 11.8h).
Months with the least sunshine are February and December (Average sunshine: 6.5).

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Average sunshine days in December
Nelson, CO

Average sunshine days in December - Nelson, CO
  • Average sunshine days in December: 22.8 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in December
Nelson, CO

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

Months with the highest UV index are June, 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
Nelson, CO

Average cloud cover in December - Nelson, CO
  • Average cloud cover in December: 28

The month with the most cloud cover is February (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in December
Nelson, CO

Average visibility in December - Nelson, 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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