December weather forecast
Big Sky Colonial Manor, MT

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Weather in December

December, the first month of the winter in Big Sky Colonial Manor, is still a freezing cold month, with an average temperature ranging between max 25.7°F (-3.5°C) and min 13.8°F (-10.1°C).

Temperature

In Big Sky Colonial Manor, the lowest average temperatures are observed in December, with a high of 25.7°F (-3.5°C) and a low of 13.8°F (-10.1°C).

Humidity

In Big Sky Colonial Manor, the average relative humidity in December is 91%.

Rainfall

In Big Sky Colonial Manor, in December, it is raining for 8.9 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 126.4 rainfall days, and 11.22" (285mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In Big Sky Colonial Manor, in December, snow falls for 19.1 days, with typically accumulated 6.77" (172mm) of snow. In Big Sky Colonial Manor, during the entire year, snow falls for 97 days and aggregates up to 33.86" (860mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 24min of daylight.
On the first day of December, sunrise is at 8:07 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 8:28 am and sunset at 4:52 pm MST.

Sunshine

The average sunshine in December is 4h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: In December, the UV index of 1 transforms into the following advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

December is the coldest month, with the temperature often reaching an average high of 25.7°F (-3.5°C) and an average low of 13.8°F (-10.1°C).

How cold is it in December?

The average high-temperature and low-temperature during December are 25.7°F (-3.5°C) and 13.8°F (-10.1°C) respectively.

What is the average humidity in December?

In December, the average relative humidity is 91%.

How many days does it rain in December?

In Big Sky Colonial Manor, in December, it is raining for 8.9 days, with typically 1.02" (26mm) of accumulated precipitation.

How much does it snow in December?

In Big Sky Colonial Manor, in December, during 19.1 snowfall days, 6.77" (172mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 24min of daylight.

What is the average length of the day in December?

In December, the average day length is 8h and 24min.

When are sunrise and sunset in December in Big Sky Colonial Manor?

On the first day of December in Big Sky Colonial Manor, sunrise is at 8:07 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 8:28 am and sunset at 4:52 pm MST.

How long on average sun shines in December?

The average sunshine duration in December is 4h.

What is the month with the lowest UV index?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

How high is the UV index in December?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Big Sky Colonial Manor, MT

Average temperature in December - Big Sky Colonial Manor, MT
  • Average high temperature in December: 25.7°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).

  • Average low temperature in December: 13.8°F

The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).

Average pressure in December
Big Sky Colonial Manor, MT

Average pressure in December - Big Sky Colonial Manor, MT
  • 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 (29.91"Hg).

Average wind speed in December
Big Sky Colonial Manor, MT

Average wind speed in December - Big Sky Colonial Manor, MT
  • Average wind speed in December: 3.7mph

The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).

Average humidity in December
Big Sky Colonial Manor, MT

Average humidity in December - Big Sky Colonial Manor, MT
  • Average humidity in December: 91%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).

Average rainfall in December
Big Sky Colonial Manor, MT

Average rainfall in December - Big Sky Colonial Manor, MT
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").

Average rainfall days in December
Big Sky Colonial Manor, MT

Average rainfall days in December - Big Sky Colonial Manor, MT
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).

Average snowfall in December
Big Sky Colonial Manor, MT

Average snowfall in December - Big Sky Colonial Manor, MT
  • Average snowfall in December: 6.77"

The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Big Sky Colonial Manor, MT

Average snowfall days in December - Big Sky Colonial Manor, MT
  • Average snowfall days in December: 19.1 days

The month with the highest number of snowfall days is December (19.1 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Big Sky Colonial Manor, MT

Average daylight in December / Average sunshine in December - Big Sky Colonial Manor, MT
  • Average daylight in December: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 4h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in December
Big Sky Colonial Manor, MT

Average sunshine days in December - Big Sky Colonial Manor, MT
  • Average sunshine days in December: 11.8 days

The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).

Average UV index in December
Big Sky Colonial Manor, MT

Average UV index in December - Big Sky Colonial Manor, MT
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in December
Big Sky Colonial Manor, MT

Average cloud cover in December - Big Sky Colonial Manor, MT
  • Average cloud cover in December: 61

The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).

Average visibility in December
Big Sky Colonial Manor, MT

Average visibility in December - Big Sky Colonial Manor, MT
  • Average visibility in December: 4mi

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

Big Sky Colonial Manor, Montana, USA

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