December weather forecast
Prospect Valley, CO

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Weather in December

The first month of the winter, December, is also a wintry month in Prospect Valley, Colorado, with an average temperature varying between 21.4°F and 40.1°F.

Temperature

December brings the lowest temperatures, with an average high of 40.1°F and an average low of 21.4°F.

Humidity

In December, the average relative humidity in Prospect Valley is 61%.

Rainfall

December is the month with the least rainfall in Prospect Valley. Rain falls for 2 days and accumulates 0.16" of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Prospect Valley, Colorado, in December, during 4.3 snowfall days, 0.91" of snow is typically accumulated. In Prospect Valley, during the entire year, snow falls for 32 days and aggregates up to 15.35" of snow.

Daylight

The month with the shortest days in Prospect Valley is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:00 am and sunset at 4:32 pm. On the last day of December, in Prospect Valley, sunrise is at 7:19 am and sunset at 4:41 pm MST.

Sunshine

In December, the average sunshine is 6.7h.

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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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FAQ

What part of the year is the coldest in Prospect Valley?

Prospect Valley's coldest month, December, registers temperatures that range from a high of 40.1°F to a low of 21.4°F.

How cold is December in Prospect Valley?

An average high-temperature, in December, in Prospect Valley, is 40.1°F and the average low-temperature is 21.4°F. In August, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is computed to be 86°F.

What is the average humidity in December in Prospect Valley?

The average relative humidity in December in Prospect Valley is 61%.

What is the driest month in Prospect Valley?

The month with the least rainfall in Prospect Valley is December, when the rain falls for 2 days and typically collects 0.16" of precipitation.

How much does it rain in Prospect Valley in December?

In Prospect Valley, Colorado, in December, it is raining for 2 days, with typically 0.16" of accumulated precipitation.

How many days does it snow in December in Prospect Valley?

In Prospect Valley, in December, during 4.3 snowfall days, 0.91" of snow is typically accumulated.

What is the month with the shortest days in Prospect Valley?

December has the shortest days of the year in Prospect Valley, with an average of 9h and 24min of daylight.

How many hours of daylight does Prospect Valley have in December?

In Prospect Valley, the average day length in December is 9h and 23min.

When is the sunrise / sunset in December in Prospect Valley?

On the first day of December in Prospect Valley, sunrise is at 7:00 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:41 pm MST.

How long on average sun shines in December in Prospect Valley?

In Prospect Valley, Colorado, the average sunshine duration in December is 6.7h.

What are the months with the lowest UV index in Prospect Valley?

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 reading in December in Prospect Valley?

In December, the average daily maximum UV index in Prospect Valley is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Prospect Valley, CO

Average temperature in December - Prospect Valley, CO
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (40.1°F).

  • Average low temperature in December: 21.4°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).

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Average pressure in December
Prospect Valley, CO

Average pressure in December - Prospect Valley, 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 June (29.89"Hg).

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Average wind speed in December
Prospect Valley, CO

Average wind speed in December - Prospect Valley, CO
  • Average wind speed in December: 6.5mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest months (with the lowest average wind speed) are September and December (6.5mph).

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Average humidity in December
Prospect Valley, CO

Average humidity in December - Prospect Valley, CO
  • Average humidity in December: 61%

The months with the highest relative humidity are January and February (64%).
The months with the lowest relative humidity are August and September (42%).

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Average rainfall in December
Prospect Valley, CO

Average rainfall in December - Prospect Valley, CO
  • Average rainfall in December: 0.16"

The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is December (0.16").

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Average rainfall days in December
Prospect Valley, CO

Average rainfall days in December - Prospect Valley, CO
  • Average rainfall days in December: 2 days

The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is January (1.4 days).

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Average snowfall in December
Prospect Valley, CO

Average snowfall in December - Prospect Valley, CO
  • Average snowfall in December: 0.91"

The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Prospect Valley, CO

Average snowfall days in December - Prospect Valley, CO
  • Average snowfall days in December: 4.3 days

The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Prospect Valley, CO

Average daylight in December / Average sunshine in December - Prospect Valley, CO
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 6h and 4min

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

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Average sunshine days in December
Prospect Valley, CO

Average sunshine days in December - Prospect Valley, CO
  • Average sunshine days in December: 26.4 days

The month with the most sunshine days is December (26.4 days).
The month with the least sunshine days is July (13 days).

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Average UV index in December
Prospect Valley, CO

Average UV index in December - Prospect Valley, 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).

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Average cloud cover in December
Prospect Valley, CO

Average cloud cover in December - Prospect Valley, CO
  • Average cloud cover in December: 24

The month with the most cloud cover is April (Cloud cover 28).
The months with the least cloud cover are June and September (Cloud cover 16).

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Average visibility in December
Prospect Valley, CO

Average visibility in December - Prospect Valley, 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).

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Prospect Valley, Colorado, USA

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