December weather forecast
Hartman, CO

Weather in December

December, the first month of the winter, in Hartman, is still a chilly month, with average temperature varying between 43.7°F (6.5°C) and 26.4°F (-3.1°C).

Temperature

The coldest month is December, with an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 26.4°F (-3.1°C).

Humidity

In December, the average relative humidity is 57%.

Rainfall

In Hartman, in December, during 3.7 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, in Hartman, Colorado, there are 79.5 rainfall days, and 8.9" (226mm) of precipitation is accumulated.

Snowfall

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

Daylight

The month with the shortest days is December, with an average of 9.6h of daylight.

Sunshine

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

UV index

Months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged 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 Hartman?

With an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 26.4°F (-3.1°C), December is the coldest month.

What is the average humidity in December in Hartman?

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

How much does it rain in Hartman in December?

In Hartman, Colorado, in December, it is raining for 3.7 days, with typically 0.35" (9mm) of accumulated precipitation.

How many days does it snow in December in Hartman?

In Hartman, Colorado, during December, snow falls for 3.5 days and regularly aggregates up to 1.02" (26mm) of snow.

What is the month with the shortest days in Hartman?

The month with the shortest days in Hartman, Colorado, is December, with an average of 9.6h of daylight.

How many hours of daylight does Hartman have in December?

In December, the average length of the day is 9.6h.

How long on average sun shines in December in Hartman?

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

When is the lowest UV index in Hartman?

Months with the lowest UV index in Hartman are January, November and December, with an average maximum UV index of 2.

What is the UV index reading in December in Hartman?

In Hartman, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat from the exposure to the Sun's UV radiation.

Average temperature in December
Hartman, CO

Average temperature in December - Hartman, 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).

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Average pressure in December
Hartman, CO

Average pressure in December - Hartman, CO
  • Average pressure in December: 30.08"

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

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Average wind speed in December
Hartman, CO

Average wind speed in December - Hartman, 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).

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Average humidity in December
Hartman, CO

Average humidity in December - Hartman, 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%).

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Average rainfall in December
Hartman, CO

Average rainfall in December - Hartman, 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").

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Average rainfall days in December
Hartman, CO

Average rainfall days in December - Hartman, 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).

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Average snowfall in December
Hartman, CO

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

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

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Average snowfall days in December
Hartman, CO

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

The month with the highest number of snowfall days is February (5.6 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
Hartman, CO

Average daylight in December / Average sunshine in December - Hartman, CO
  • Average daylight in December: 9.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in December: 6.8h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.6h).

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Average sunshine days in December
Hartman, CO

Average sunshine days in December - Hartman, 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).

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Average UV index in December
Hartman, CO

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

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

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Average cloud cover in December
Hartman, CO

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

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

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Average visibility in December
Hartman, CO

Average visibility in December - Hartman, 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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