December weather forecast
Sheridan, CO

Weather in December

The first month of the winter, December, is also a wintry month in Sheridan, Colorado, with temperature in the range of an average low of 21.4°F (-5.9°C) and an average high of 41.7°F (5.4°C).

Temperature

December is the coldest month, with an average high-temperature of 41.7°F (5.4°C) and an average low-temperature of 21.4°F (-5.9°C).

Humidity

In December, the average relative humidity is 60%.

Rainfall

In Sheridan, during 2 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. Throughout the year, there are 80.2 rainfall days, and 9.72" (247mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Sheridan are January through May, October through December. In Sheridan, during December, snow falls for 4.7 days and regularly aggregates up to 2.24" (57mm) of snow. Throughout the year, there are 33 snowfall days, and 26.26" (667mm) of snow is accumulated.

Daylight

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

Sunshine

In Sheridan, the average sunshine is 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 of 2, and less, symbolizes a low threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 2 in December transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Sheridan?

December is the coldest month, with an average high-temperature of 41.7°F (5.4°C) and an average low-temperature of 21.4°F (-5.9°C).

What is the average humidity in December in Sheridan?

The average relative humidity in December is 60%.

How many days does it rain in December in Sheridan?

In December, the rain falls for 2 days. Throughout December, 0.28" (7mm) of precipitation is accumulated.

How many days does it snow in December in Sheridan?

In Sheridan, Colorado, in December, snow falls for 4.7 days, with typically accumulated 2.24" (57mm) of snow.

What is the month with the shortest days in Sheridan?

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

How many hours of daylight does Sheridan have in December?

In December, the average length of the day is 9.4h.

How long on average sun shines in December in Sheridan?

In Sheridan, Colorado, the average sunshine in December is 7h.

When is the lowest UV index in Sheridan?

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

How high is the UV index in December in Sheridan?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.

Average temperature in December
Sheridan, CO

Average temperature in December - Sheridan, CO
  • Average high temperature in December: 41.7°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (41.7°F).

  • Average low temperature in December: 21.4°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).

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Average pressure in December
Sheridan, CO

Average pressure in December - Sheridan, CO
  • Average pressure in December: 30.11"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are April and June (29.91").

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Average wind speed in December
Sheridan, CO

Average wind speed in December - Sheridan, CO
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is December (6mph).

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Average humidity in December
Sheridan, CO

Average humidity in December - Sheridan, CO
  • Average humidity in December: 60%

The month with the highest relative humidity is February (64%).
Months with the lowest relative humidity are June and August (41%).

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Average rainfall in December
Sheridan, CO

Average rainfall in December - Sheridan, CO
  • Average rainfall in December: 0.28"

The wettest month (with the highest rainfall) is May (1.89").
The driest month (with the least rainfall) is January (0.24").

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Average rainfall days in December
Sheridan, CO

Average rainfall days in December - Sheridan, CO
  • Average rainfall days in December: 2 days

The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is January (1.5 days).

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Average snowfall in December
Sheridan, CO

Average snowfall in December - Sheridan, CO
  • Average snowfall in December: 2.24"

The month with the highest snowfall is April (4.96").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Sheridan, CO

Average snowfall days in December - Sheridan, CO
  • Average snowfall days in December: 4.7 days

The month with the highest number of snowfall days is February (6.8 days).
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
Sheridan, CO

Average daylight in December / Average sunshine in December - Sheridan, CO
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in December: 7h

Months with the most sunshine are June and July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.8h).

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Average sunshine days in December
Sheridan, CO

Average sunshine days in December - Sheridan, CO
  • Average sunshine days in December: 25.4 days

The month with the most sunshine days is January (25.6 days).
The month with the least sunshine days is May (14 days).

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Average UV index in December
Sheridan, CO

Average UV index in December - Sheridan, 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
Sheridan, CO

Average cloud cover in December - Sheridan, CO
  • Average cloud cover in December: 21

The month with the most cloud cover is April (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).

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Average visibility in December
Sheridan, CO

Average visibility in December - Sheridan, 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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