December weather forecast
Piedmont, WY

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Weather in December

The first month of the winter, December, is still a freezing cold month in Piedmont, Wyoming, with an average temperature fluctuating between 26.6°F (-3°C) and 12°F (-11.1°C).

Temperature

December, with average temperatures reaching a high of 26.6°F (-3°C) and a low of 12°F (-11.1°C), is the coldest month.

Humidity

In December, the average relative humidity in Piedmont, Wyoming, is 81%.

Rainfall

In Piedmont, in December, during 4.5 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. Throughout the year, there are 78.2 rainfall days, and 7.48" (190mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall. In Piedmont, during December, snow falls for 9.2 days and regularly aggregates up to 3.5" (89mm) of snow. In Piedmont, during the entire year, snow falls for 58.7 days and aggregates up to 24.72" (628mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:29 am and sunset at 4:54 pm. On the last day of December, in Piedmont, sunrise is at 7:47 am and sunset at 5:03 pm MST.

Sunshine

December has the least sunshine of the year, with an average of 6.3h of sunshine.

UV index

The months with the lowest UV index in Piedmont are January through April, 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 the ordinary person.
Note: The maximum daily UV index of 2 during December translates into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

What is the coldest time of year in Piedmont?

Piedmont, Wyoming, experiences its average lowest temperatures in December, reaching a peak of 26.6°F (-3°C) and a minimum of 12°F (-11.1°C).

How cold is December in Piedmont?

In Piedmont, in December, the average high-temperature is 26.6°F (-3°C), and the average low-temperature is 12°F (-11.1°C).

What is the average humidity in December in Piedmont?

In Piedmont, the average relative humidity in December is 81%.

How much does it rain in Piedmont in December?

In December, in Piedmont, the rain falls for 4.5 days. Throughout December, 0.47" (12mm) of precipitation is accumulated.

How much does it snow in Piedmont in December?

In Piedmont, in December, during 9.2 snowfall days, 3.5" (89mm) of snow is typically accumulated.

What is the month with the shortest days in Piedmont?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Piedmont?

In Piedmont, the average day length in December is 9h and 16min.

When is the sunrise / sunset in December in Piedmont?

In December, on the first day of the month, sunrise is at 7:29 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:03 pm MST.

What is the month with the least sunshine in Piedmont?

December has the least sunshine of the year in Piedmont, with an average of 6.3h of sunshine.

How many hours of sunshine does Piedmont have in December?

The average sunshine duration in December in Piedmont is 6.3h.

When is the lowest UV index in Piedmont?

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

What is the UV index intensity in December in Piedmont?

The average daily maximum UV index in December in Piedmont is 2. A UV Index estimate of 2, and below, represents 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
Piedmont, WY

Average temperature in December - Piedmont, WY
  • Average high temperature in December: 26.6°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (26.6°F).

  • Average low temperature in December: 12°F

The month with the highest average low temperature is July (55.9°F).
The coldest months (with the lowest average low temperature) are January and December (12°F).

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Average pressure in December
Piedmont, WY

Average pressure in December - Piedmont, WY
  • Average pressure in December: 30.24"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in December
Piedmont, WY

Average wind speed in December - Piedmont, WY
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in December
Piedmont, WY

Average humidity in December - Piedmont, WY
  • Average humidity in December: 81%

The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are July and August (35%).

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Average rainfall in December
Piedmont, WY

Average rainfall in December - Piedmont, WY
  • Average rainfall in December: 0.47"

The wettest month (with the highest rainfall) is May (1.18").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in December
Piedmont, WY

Average rainfall days in December - Piedmont, WY
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is November (3.5 days).

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Average snowfall in December
Piedmont, WY

Average snowfall in December - Piedmont, WY
  • Average snowfall in December: 3.5"

The month with the highest snowfall is March (5.04").
The months with the least snowfall are July and August (0").

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Average snowfall days in December
Piedmont, WY

Average snowfall days in December - Piedmont, WY
  • Average snowfall days in December: 9.2 days

The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in December /
Average sunshine in December
Piedmont, WY

Average daylight in December / Average sunshine in December - Piedmont, WY
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 6h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).

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Average sunshine days in December
Piedmont, WY

Average sunshine days in December - Piedmont, WY
  • Average sunshine days in December: 20.2 days

The months with the most sunshine days are January and October (22.3 days).
The month with the least sunshine days is July (15.9 days).

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Average UV index in December
Piedmont, WY

Average UV index in December - Piedmont, WY
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
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
Piedmont, WY

Average cloud cover in December - Piedmont, WY
  • Average cloud cover in December: 35

The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 12).

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Average visibility in December
Piedmont, WY

Average visibility in December - Piedmont, WY
  • 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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Piedmont, Wyoming, USA

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