December weather forecast
Moran, WY

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Weather in December

December, the first month of the winter in Moran, is still a freezing cold month, with an average temperature varying between 3.7°F (-15.7°C) and 21.7°F (-5.7°C).

Temperature

December, with average temperatures reaching a high of 21.7°F (-5.7°C) and a low of 3.7°F (-15.7°C), is the coldest month.

Humidity

In December, the average relative humidity is 91%.

Rainfall

In Moran, Wyoming, in December, during 5.3 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. Throughout the year, in Moran, there are 111.3 rainfall days, and 29.09" (739mm) of precipitation is accumulated.

Snowfall

January through July, September through December are months with snowfall. In Moran, in December, during 22.7 snowfall days, 23.74" (603mm) of snow is typically accumulated. In Moran, Wyoming, during the entire year, snow falls for 153.5 days and aggregates up to 167.44" (4253mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 0min of daylight.
On the first day of December in Moran, sunrise is at 7:36 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 4:54 pm MST.

Sunshine

In December, the average sunshine is 4.3h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 1 during December translates into the following guidance:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

December is the month that records the lowest temperatures, with averages ranging from a high of 21.7°F (-5.7°C) to a low of 3.7°F (-15.7°C).

How cold is it in December?

The high-temperature during December is 21.7°F (-5.7°C) and the low-temperature is 3.7°F (-15.7°C).

What is the average humidity in December?

In December, the average relative humidity in Moran is 91%.

How much does it rain in December?

In December, the rain falls for 5.3 days. Throughout December, 2.83" (72mm) of precipitation is accumulated.

How many days does it snow in December?

In December, it is snowing for 22.7 days. Throughout December, 23.74" (603mm) of snow is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 0min of daylight.

How many hours of daylight does Moran have in December?

In Moran, the average day length in December is 8h and 58min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:36 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 4:54 pm MST.

How many hours of sunshine does Moran have in December?

In December, the average sunshine duration is 4.3h.

When is the lowest UV index?

January through March, October through December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index intensity in December?

The average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.
Average max. wind speed
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
Moran, WY

Average temperature in December - Moran, WY
  • Average high temperature in December: 21.7°F

The warmest month (with the highest average high temperature) is July (73.9°F).
The month with the lowest average high temperature is December (21.7°F).

  • Average low temperature in December: 3.7°F

The month with the highest average low temperature is July (44.2°F).
The coldest month (with the lowest average low temperature) is December (3.7°F).

Average pressure in December
Moran, WY

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

The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Moran, WY

Average wind speed in December - Moran, WY
  • Average wind speed in December: 4.6mph

The windiest month (with the highest average wind speed) is June (6.1mph).
The calmest months (with the lowest average wind speed) are January and December (4.6mph).

Average humidity in December
Moran, WY

Average humidity in December - Moran, WY
  • Average humidity in December: 91%

The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is August (49%).

Average rainfall in December
Moran, WY

Average rainfall in December - Moran, WY
  • Average rainfall in December: 2.83"

The wettest month (with the highest rainfall) is February (3.54").
The driest months (with the least rainfall) are July and August (1.02").

Average rainfall days in December
Moran, WY

Average rainfall days in December - Moran, WY
  • Average rainfall days in December: 5.3 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (3.5 days).

Average snowfall in December
Moran, WY

Average snowfall in December - Moran, WY
  • Average snowfall in December: 23.74"

The month with the highest snowfall is February (29.65").
The month with the least snowfall is August (0").

Average snowfall days in December
Moran, WY

Average snowfall days in December - Moran, WY
  • Average snowfall days in December: 22.7 days

The month with the highest number of snowfall days is March (23.8 days).
The months with the least snowfall days are July and August (0.2 days).

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

Average daylight in December / Average sunshine in December - Moran, WY
  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

Average sunshine days in December
Moran, WY

Average sunshine days in December - Moran, WY
  • Average sunshine days in December: 8.8 days

The month with the most sunshine days is September (16.7 days).
The month with the least sunshine days is February (5.2 days).

Average UV index in December
Moran, WY

Average UV index in December - Moran, WY
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).

Average cloud cover in December
Moran, WY

Average cloud cover in December - Moran, WY
  • Average cloud cover in December: 61

The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 14).

Average visibility in December
Moran, WY

Average visibility in December - Moran, WY
  • Average visibility in December: 3mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (3mi).

Moran, Wyoming, USA

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