December weather forecast
Packers Roost, MT

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Weather in December

The first month of the winter, December, is still a freezing cold month in Packers Roost, Montana, with temperature in the range of an average low of 11.3°F (-11.5°C) and an average high of 23.2°F (-4.9°C).

Temperature

The lowest temperatures are recorded in December, with averages reaching a high of 23.2°F (-4.9°C) and a low of 11.3°F (-11.5°C).

Humidity

In December, the average relative humidity is 92%.

Rainfall

In Packers Roost, in December, it is raining for 5.5 days, with typically 2.48" (63mm) of accumulated precipitation. In Packers Roost, Montana, during the entire year, the rain falls for 118.6 days and collects up to 20.75" (527mm) of precipitation.

Snowfall

Months with snowfall in Packers Roost are January through June, September through December. In Packers Roost, in December, snow falls for 22.8 days, with typically accumulated 19.17" (487mm) of snow. In Packers Roost, Montana, during the entire year, snow falls for 128.7 days and aggregates up to 92.13" (2340mm) of snow.

Daylight

December has the shortest days of the year in Packers Roost, with an average of 8h and 18min of daylight.
On the first day of December in Packers Roost, sunrise is at 8:07 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 8:27 am and sunset at 4:49 pm MST.

Sunshine

The average sunshine in December in Packers Roost is 3.2h.

UV index

The months with the lowest UV index are January through March, 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 radiation for average individuals.
Note: An average maximum UV index of 1 in December leads to these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What part of the year is the coldest in Packers Roost?

December is the month when Packers Roost experiences its coldest temperatures, averaging a high of 23.2°F (-4.9°C) and a low of 11.3°F (-11.5°C).

How cold is it in Packers Roost in December?

During December, Packers Roost experiences an average high-temperature of 23.2°F (-4.9°C) and a low-temperature of 11.3°F (-11.5°C).

What is the average humidity in December in Packers Roost?

In December, the average relative humidity in Packers Roost, Montana, is 92%.

How many days does it rain in December in Packers Roost?

In Packers Roost, in December, it is raining for 5.5 days, with typically 2.48" (63mm) of accumulated precipitation.

How many days does it snow in December in Packers Roost?

In December, in Packers Roost, Montana, it is snowing for 22.8 days. Throughout December, 19.17" (487mm) of snow is accumulated.

What is the month with the shortest days in Packers Roost?

December has the shortest days of the year in Packers Roost, Montana, with an average of 8h and 18min of daylight.

What is the average length of the day in December in Packers Roost?

The average day length in December in Packers Roost, Montana, is 8h and 21min.

When is the sunrise / sunset in December in Packers Roost?

On the first day of December in Packers Roost, Montana, sunrise is at 8:07 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 8:27 am and sunset at 4:49 pm MST.

How long on average sun shines in December in Packers Roost?

The average sunshine duration in December is 3.2h.

When is the lowest UV index in Packers Roost?

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

What is the UV index reading in December in Packers Roost?

The average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes 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
Packers Roost, MT

Average temperature in December - Packers Roost, MT
  • Average high temperature in December: 23.2°F

The warmest month (with the highest average high temperature) is July (73°F).
The month with the lowest average high temperature is December (23.2°F).

  • Average low temperature in December: 11.3°F

The months with the highest average low temperature are July and August (44.2°F).
The coldest month (with the lowest average low temperature) is February (10.9°F).

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Average pressure in December
Packers Roost, MT

Average pressure in December - Packers Roost, MT
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Packers Roost, MT

Average wind speed in December - Packers Roost, MT
  • Average wind speed in December: 6.6mph

The windiest month (with the highest average wind speed) is November (7mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in December
Packers Roost, MT

Average humidity in December - Packers Roost, MT
  • Average humidity in December: 92%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (56%).

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Average rainfall in December
Packers Roost, MT

Average rainfall in December - Packers Roost, MT
  • Average rainfall in December: 2.48"

The wettest month (with the highest rainfall) is January (2.56").
The driest month (with the least rainfall) is August (0.71").

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Average rainfall days in December
Packers Roost, MT

Average rainfall days in December - Packers Roost, MT
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4.3 days).

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Average snowfall in December
Packers Roost, MT

Average snowfall in December - Packers Roost, MT
  • Average snowfall in December: 19.17"

The month with the highest snowfall is January (20.16").
The months with the least snowfall are July and August (0").

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Average snowfall days in December
Packers Roost, MT

Average snowfall days in December - Packers Roost, MT
  • Average snowfall days in December: 22.8 days

The month with the highest number of snowfall days is December (22.8 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
Packers Roost, MT

Average daylight in December / Average sunshine in December - Packers Roost, MT
  • Average daylight in December: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

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Average sunshine days in December
Packers Roost, MT

Average sunshine days in December - Packers Roost, MT
  • Average sunshine days in December: 8 days

The month with the most sunshine days is August (19.6 days).
The month with the least sunshine days is February (7.2 days).

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Average UV index in December
Packers Roost, MT

Average UV index in December - Packers Roost, MT
  • 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, November and December (UV index 1).

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Average cloud cover in December
Packers Roost, MT

Average cloud cover in December - Packers Roost, MT
  • Average cloud cover in December: 70

The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 17).

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Average visibility in December
Packers Roost, MT

Average visibility in December - Packers Roost, MT
  • Average visibility in December: 4mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

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Packers Roost, Montana, USA

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