December weather forecast
Silver Star, MT

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Weather in December

The first month of the winter, December, is still a freezing cold month in Silver Star, Montana, with an average temperature varying between 26.4°F (-3.1°C) and 11.3°F (-11.5°C).

Temperature

The coldest month is December, with an average high-temperature of 26.4°F (-3.1°C) and an average low-temperature of 11.3°F (-11.5°C).

Humidity

In Silver Star, the average relative humidity in December is 84%.

Rainfall

In December, the rain falls for 11.9 days. Throughout December, 0.71" (18mm) of precipitation is accumulated. Throughout the year, in Silver Star, there are 158 rainfall days, and 12.2" (310mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Silver Star, Montana, during December, snow falls for 4.5 days and regularly aggregates up to 0.87" (22mm) of snow. Throughout the year, there are 20.8 snowfall days, and 5.12" (130mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 48min of daylight.
On the first day of the month, sunrise is at 7:50 am and sunset at 4:46 pm. On the last day of December, sunrise is at 8:09 am and sunset at 4:55 pm MST.

Sunshine

December has the least sunshine of the year, with an average of 6h of sunshine.

UV index

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Frequently asked questions

What time of the year is the coldest in Silver Star?

December is the month when Silver Star experiences its coldest temperatures, averaging a high of 26.4°F (-3.1°C) and a low of 11.3°F (-11.5°C).

How cold is December in Silver Star?

The high-temperature, in December, in Silver Star, is 26.4°F (-3.1°C), while the low-temperature averages to 11.3°F (-11.5°C).

What is the average humidity in December in Silver Star?

In December, the average relative humidity in Silver Star is 84%.

How many days does it rain in December in Silver Star?

In Silver Star, in December, during 11.9 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

How much does it snow in Silver Star in December?

In December, it is snowing for 4.5 days. Throughout December, 0.87" (22mm) of snow is accumulated.

What is the month with the shortest days in Silver Star?

December has the shortest days of the year, with an average of 8h and 48min of daylight.

What is the average length of the day in December in Silver Star?

In December, the average day length is 8h and 45min.

What time are sunrise and sunset in December in Silver Star?

On the first day of December in Silver Star, Montana, sunrise is at 7:50 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 4:55 pm MST.

What is the month with the least sunshine in Silver Star?

December has the least sunshine of the year in Silver Star, Montana, with an average of 6h of sunshine.

How long on average sun shines in December in Silver Star?

The average sunshine duration in December in Silver Star, Montana, is 6h.

What are the months with the lowest UV index in Silver Star?

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Silver Star, Montana.

What is the UV index reading in December in Silver Star?

In Silver Star, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to 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
Silver Star, MT

Average temperature in December - Silver Star, MT
  • Average high temperature in December: 26.4°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is December (26.4°F).

  • Average low temperature in December: 11.3°F

The month with the highest average low temperature is July (47.7°F).
The coldest month (with the lowest average low temperature) is December (11.3°F).

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Average pressure in December
Silver Star, MT

Average pressure in December - Silver Star, MT
  • Average pressure in December: 30.22"Hg

The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Silver Star, MT

Average wind speed in December - Silver Star, MT
  • Average wind speed in December: 6.1mph

The windiest month (with the highest average wind speed) is November (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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Average humidity in December
Silver Star, MT

Average humidity in December - Silver Star, MT
  • Average humidity in December: 84%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).

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Average rainfall in December
Silver Star, MT

Average rainfall in December - Silver Star, MT
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in December
Silver Star, MT

Average rainfall days in December - Silver Star, MT
  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is April (18.6 days).
The month with the least rainy days is August (8.6 days).

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Average snowfall in December
Silver Star, MT

Average snowfall in December - Silver Star, MT
  • Average snowfall in December: 0.87"

The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Silver Star, MT

Average snowfall days in December - Silver Star, MT
  • Average snowfall days in December: 4.5 days

The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Silver Star, MT

Average daylight in December / Average sunshine in December - Silver Star, MT
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 6h and 0min

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 0min).

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Average sunshine days in December
Silver Star, MT

Average sunshine days in December - Silver Star, MT
  • Average sunshine days in December: 14.8 days

The month with the most sunshine days is July (17.8 days).
The month with the least sunshine days is April (7.8 days).

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Average UV index in December
Silver Star, MT

Average UV index in December - Silver Star, MT
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 5).
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
Silver Star, MT

Average cloud cover in December - Silver Star, MT
  • Average cloud cover in December: 40

The month with the most cloud cover is February (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 14).

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Average visibility in December
Silver Star, MT

Average visibility in December - Silver Star, MT
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).

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Silver Star, Montana, USA

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