December weather forecast
Manderson, WY

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Weather in December

December, the first month of the winter in Manderson, is also a subzero cold month, with an average temperature ranging between max 28.8°F (-1.8°C) and min 14.2°F (-9.9°C).

Temperature

In Manderson, the lowest temperatures are generally noted in December, averaging a high of 28.8°F (-1.8°C) and a low of 14.2°F (-9.9°C).

Humidity

In Manderson, the average relative humidity in December is 73%.

Rainfall

December is the month with the least rainfall. Rain falls for 6.5 days and accumulates 0.2" (5mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Manderson, during December, snow falls for 7.5 days and regularly aggregates up to 1.3" (33mm) of snow. In Manderson, during the entire year, snow falls for 41.4 days and aggregates up to 9.41" (239mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:28 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:47 am and sunset at 4:43 pm MST.

Sunshine

In December, the average sunshine is 7h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

With its average high temperature of 28.8°F (-1.8°C) and a low of 14.2°F (-9.9°C), December is regarded as the coldest month.

How cold is it in Manderson in December?

The average high-temperature, in December, in Manderson, is 28.8°F (-1.8°C), while the average low-temperature is 14.2°F (-9.9°C).

What is the average humidity in December?

In Manderson, the average relative humidity in December is 73%.

What is the driest month?

December is the month with the least rainfall. Rain falls for 6.5 days and accumulates 0.2" (5mm) of precipitation.

How many days does it rain in December?

In December, in Manderson, Wyoming, the rain falls for 6.5 days. Throughout December, 0.2" (5mm) of precipitation is accumulated.

How much does it snow in December?

In Manderson, during December, snow falls for 7.5 days and regularly aggregates up to 1.3" (33mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 8h and 54min of daylight.

How many hours of daylight does Manderson have in December?

The average day length in December is 8h and 56min.

When is the sunrise / sunset in December in Manderson?

In December, on the first day of the month, sunrise is at 7:28 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:43 pm MST.

How long on average sun shines in December?

In December, the average sunshine duration is 7h.

When is the lowest UV index?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in December?

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

Average temperature in December - Manderson, WY
  • Average high temperature in December: 28.8°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.8°F).

  • Average low temperature in December: 14.2°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

Average pressure in December
Manderson, WY

Average pressure in December - Manderson, WY
  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in December
Manderson, WY

Average wind speed in December - Manderson, WY
  • Average wind speed in December: 6.5mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest months (with the lowest average wind speed) are January and August (6mph).

Average humidity in December
Manderson, WY

Average humidity in December - Manderson, WY
  • Average humidity in December: 73%

The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are July and August (33%).

Average rainfall in December
Manderson, WY

Average rainfall in December - Manderson, WY
  • Average rainfall in December: 0.2"

The wettest month (with the highest rainfall) is May (0.87").
The driest month (with the least rainfall) is December (0.2").

Average rainfall days in December
Manderson, WY

Average rainfall days in December - Manderson, WY
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is December (6.5 days).

Average snowfall in December
Manderson, WY

Average snowfall in December - Manderson, WY
  • Average snowfall in December: 1.3"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Manderson, WY

Average snowfall days in December - Manderson, WY
  • Average snowfall days in December: 7.5 days

The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in December / Average sunshine in December - Manderson, WY
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 7h and 0min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).

Average sunshine days in December
Manderson, WY

Average sunshine days in December - Manderson, WY
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is December (20.9 days).
The months with the least sunshine days are April and June (12.5 days).

Average UV index in December
Manderson, WY

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Manderson, WY

Average cloud cover in December - Manderson, WY
  • Average cloud cover in December: 26

The month with the most cloud cover is February (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in December
Manderson, WY

Average visibility in December - Manderson, 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).

Manderson, Wyoming, USA

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