December weather forecast
Hartsel, CO

Weather in December

The first month of the winter, December, is also a subzero cold month in Hartsel, Colorado, with an average temperature varying between 28.4°F (-2°C) and 7.2°F (-13.8°C).

Temperature

With an average high-temperature of 28.4°F (-2°C) and an average low-temperature of 7.2°F (-13.8°C), December is the coldest month.

Humidity

In Hartsel, Colorado, the average relative humidity in December is 76%.

Rainfall

In Hartsel, in December, during 4 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Hartsel, during the entire year, the rain falls for 112.5 days and collects up to 14.13" (359mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. In Hartsel, during 11.8 snowfall days, 5.12" (130mm) of snow is typically accumulated. Throughout the year, there are 88 snowfall days, and 51.5" (1308mm) of snow is accumulated.

Daylight

With an average of 9h and 29min of daylight, December has the shortest days of the year in Hartsel, Colorado.
On the first day of December, sunrise is at 7:03 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:50 pm MST.

Sunshine

In Hartsel, the average sunshine in December is 6.9h.

UV index

The months with the lowest UV index are January through April, 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 exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 2 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 Hartsel?

With an average high-temperature of 28.4°F (-2°C) and an average low-temperature of 7.2°F (-13.8°C), December is the coldest month.

What is the temperature in December in Hartsel?

In December, in Hartsel, Colorado, the average high-temperature is 28.4°F (-2°C), and the average low-temperature is 7.2°F (-13.8°C).

What is the average humidity in December in Hartsel?

In Hartsel, Colorado, the average relative humidity in December is 76%.

How much does it rain in Hartsel in December?

In Hartsel, Colorado, in December, it is raining for 4 days, with typically 0.63" (16mm) of accumulated precipitation.

How many days does it snow in December in Hartsel?

In December, in Hartsel, Colorado, it is snowing for 11.8 days. Throughout December, 5.12" (130mm) of snow is accumulated.

What is the month with the shortest days in Hartsel?

The month with the shortest days is December, with an average of 9h and 29min of daylight.

How many hours of daylight does Hartsel have in December?

In December, the average day length is 9h and 29min.

When are sunrise and sunset in December in Hartsel?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:50 pm MST.

How many hours of sunshine does Hartsel have in December?

In December, the average sunshine duration in Hartsel is 6.9h.

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

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

How high is the UV index in December in Hartsel?

The average daily maximum UV index in December in Hartsel 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
Hartsel, CO

Average temperature in December - Hartsel, CO
  • Average high temperature in December: 28.4°F

The warmest month (with the highest average high temperature) is July (71.6°F).
The month with the lowest average high temperature is December (28.4°F).

  • Average low temperature in December: 7.2°F

The month with the highest average low temperature is July (45.9°F).
The coldest months (with the lowest average low temperature) are January and December (7.2°F).

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Average pressure in December
Hartsel, CO

Average pressure in December - Hartsel, CO
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is April (29.93"Hg).

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Average wind speed in December
Hartsel, CO

Average wind speed in December - Hartsel, CO
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in December
Hartsel, CO

Average humidity in December - Hartsel, CO
  • Average humidity in December: 76%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is June (45%).

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Average rainfall in December
Hartsel, CO

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

The wettest month (with the highest rainfall) is July (2.64").
The driest months (with the least rainfall) are January and November (0.51").

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Average rainfall days in December
Hartsel, CO

Average rainfall days in December - Hartsel, CO
  • Average rainfall days in December: 4 days

The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is November (3.2 days).

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Average snowfall in December
Hartsel, CO

Average snowfall in December - Hartsel, CO
  • Average snowfall in December: 5.12"

The month with the highest snowfall is April (8.98").
The months with the least snowfall are July and August (0").

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Average snowfall days in December
Hartsel, CO

Average snowfall days in December - Hartsel, CO
  • Average snowfall days in December: 11.8 days

The month with the highest number of snowfall days is April (13.6 days).
The month with the least snowfall days is August (0 days).

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

Average daylight in December / Average sunshine in December - Hartsel, CO
  • Average daylight in December: 9h and 29min

The month with the longest days is June (Average daylight: 14h and 52min).
The month with the shortest days is December (Average daylight: 9h and 29min).

  • Average sunshine in December: 6h and 54min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

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Average sunshine days in December
Hartsel, CO

Average sunshine days in December - Hartsel, CO
  • Average sunshine days in December: 18.7 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (7 days).

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Average UV index in December
Hartsel, CO

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

The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in December
Hartsel, CO

Average cloud cover in December - Hartsel, CO
  • Average cloud cover in December: 26

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

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Average visibility in December
Hartsel, CO

Average visibility in December - Hartsel, CO
  • Average visibility in December: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

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