December weather forecast
Glenwood Springs, CO

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The natural beauty of Glenwood Springs, Colorado, in the tourist spot of the Hanging Lake
The natural beauty of Glenwood Springs, Colorado, in the tourist spot of the Hanging Lake

Weather in December

In Glenwood Springs, December bears the brunt of winter, harboring the most severe conditions. The heaviest snowfall is witnessed in this month, with an impressive 8.62" (219mm) accumulation. Residents and visitors revel in festive activities, despite challenging weather conditions. As the month closes, the city gears up for another cold January, bringing the weather cycle full circle.

Temperature

As November transitions into December, Glenwood Springs sees a drop in the average high-temperature, transitioning from a cold 40.5°F (4.7°C) to a subzero cold 29.5°F (-1.4°C). During the nights in December, the temperature averages to a frigid cold 11.7°F (-11.3°C).

Humidity

The average relative humidity in December in Glenwood Springs is 80%.

Rainfall

In Glenwood Springs, in December, during 9.4 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 123 rainfall days, and 14.65" (372mm) of precipitation is accumulated.

Snowfall

January through June, October through December are months with snowfall in Glenwood Springs. In Glenwood Springs, Colorado, in December, during 12.8 snowfall days, 8.62" (219mm) of snow is typically accumulated. In Glenwood Springs, Colorado, during the entire year, snow falls for 69.4 days and aggregates up to 49.13" (1248mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of December in Glenwood Springs, Colorado, sunrise is at 7:11 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:55 pm MST.

Sunshine

The average sunshine in December in Glenwood Springs, Colorado, is 6.4h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 2 during December translates into these guidelines:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

How cold is it in Glenwood Springs in December?

In December, in Glenwood Springs, the average high-temperature is 29.5°F (-1.4°C), and the average low-temperature is 11.7°F (-11.3°C).

What is the average humidity in December in Glenwood Springs?

In December, the average relative humidity in Glenwood Springs, Colorado, is 80%.

How many days does it rain in December in Glenwood Springs?

In Glenwood Springs, during December, the rain falls for 9.4 days and regularly aggregates up to 1.3" (33mm) of precipitation.

How much does it snow in Glenwood Springs in December?

In Glenwood Springs, Colorado, in December, during 12.8 snowfall days, 8.62" (219mm) of snow is typically accumulated.

What is the month with the shortest days in Glenwood Springs?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Glenwood Springs, Colorado.

How many hours of daylight does Glenwood Springs have in December?

In December, the average day length in Glenwood Springs is 9h and 26min.

When is the sunrise / sunset in December in Glenwood Springs?

On the first day of December in Glenwood Springs, Colorado, sunrise is at 7:11 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:55 pm MST.

How long on average sun shines in December in Glenwood Springs?

In December, the average sunshine duration in Glenwood Springs is 6.4h.

When is the lowest UV index in Glenwood Springs?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Glenwood Springs, Colorado.

What is the UV index intensity in December in Glenwood Springs?

In December, the average daily maximum UV index in Glenwood Springs is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from 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
Glenwood Springs, CO

Average temperature in December - Glenwood Springs, CO
  • Average high temperature in December: 29.5°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in December: 11.7°F

The month with the highest average low temperature is July (47.8°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).

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Average pressure in December
Glenwood Springs, CO

Average pressure in December - Glenwood Springs, CO
  • Average pressure in December: 30.19"Hg

The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is May (29.93"Hg).

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Average wind speed in December
Glenwood Springs, CO

Average wind speed in December - Glenwood Springs, CO
  • Average wind speed in December: 4.3mph

The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.3mph).

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Average humidity in December
Glenwood Springs, CO

Average humidity in December - Glenwood Springs, CO
  • Average humidity in December: 80%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is June (47%).

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Average rainfall in December
Glenwood Springs, CO

Average rainfall in December - Glenwood Springs, CO
  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is April (1.73").
The driest month (with the least rainfall) is September (0.63").

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Average rainfall days in December
Glenwood Springs, CO

Average rainfall days in December - Glenwood Springs, CO
  • Average rainfall days in December: 9.4 days

The month with the highest number of rainy days is April (15 days).
The month with the least rainy days is February (7.1 days).

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Average snowfall in December
Glenwood Springs, CO

Average snowfall in December - Glenwood Springs, CO
  • Average snowfall in December: 8.62"

The month with the highest snowfall is February (11.18").
The months with the least snowfall are July, August and September (0").

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Average snowfall days in December
Glenwood Springs, CO

Average snowfall days in December - Glenwood Springs, CO
  • Average snowfall days in December: 12.8 days

The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Glenwood Springs, CO

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

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 24min).

  • Average sunshine in December: 6h and 2min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).

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Average sunshine days in December
Glenwood Springs, CO

Average sunshine days in December - Glenwood Springs, CO
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is April (9.6 days).

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Average UV index in December
Glenwood Springs, CO

Average UV index in December - Glenwood Springs, 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, March, October, November and December (UV index 2).

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Average cloud cover in December
Glenwood Springs, CO

Average cloud cover in December - Glenwood Springs, CO
  • Average cloud cover in December: 33

The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 12).

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Average visibility in December
Glenwood Springs, CO

Average visibility in December - Glenwood Springs, CO
  • Average visibility in December: 5mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

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Glenwood Springs, Colorado, USA

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