December weather forecast
Three Forks, MT

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Weather in December

December, the first month of the winter in Three Forks, is still a freezing cold month, with an average temperature fluctuating between 12.7°F (-10.7°C) and 28°F (-2.2°C).

Temperature

Three Forks's coldest month, December, generally records average temperatures ranging from a high of 28°F (-2.2°C) to a low of 12.7°F (-10.7°C).

Humidity

In Three Forks, Montana, the average relative humidity in December is 84%.

Rainfall

In December, the rain falls for 9.5 days. Throughout December, 0.67" (17mm) of precipitation is accumulated. In Three Forks, during the entire year, the rain falls for 134.2 days and collects up to 11.34" (288mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Three Forks. In Three Forks, during December, snow falls for 14.8 days and regularly aggregates up to 4.72" (120mm) of snow. In Three Forks, during the entire year, snow falls for 79.6 days and aggregates up to 30.08" (764mm) of snow.

Daylight

December has the shortest days of the year in Three Forks, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:48 am and sunset at 4:42 pm. On the last day of December, in Three Forks, sunrise is at 8:07 am and sunset at 4:51 pm MST.

Sunshine

In December, the average sunshine in Three Forks is 6.1h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 1 transforms into these recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. On your guard! Snow's reflection 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 Three Forks?

December, with average temperatures reaching a high of 28°F (-2.2°C) and a low of 12.7°F (-10.7°C), is the coldest month in Three Forks.

How cold is it in Three Forks in December?

The high-temperature, in December, in Three Forks, is 28°F (-2.2°C), while the low-temperature averages to 12.7°F (-10.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is appraised at 82.4°F (28°C).

What is the average humidity in December in Three Forks?

In December, the average relative humidity in Three Forks, Montana, is 84%.

How much does it rain in Three Forks in December?

In Three Forks, Montana, during December, the rain falls for 9.5 days and regularly aggregates up to 0.67" (17mm) of precipitation.

How many days does it snow in December in Three Forks?

In Three Forks, Montana, in December, snow falls for 14.8 days, with typically accumulated 4.72" (120mm) of snow.

What is the month with the shortest days in Three Forks?

December has the shortest days of the year in Three Forks, with an average of 8h and 42min of daylight.

How many hours of daylight does Three Forks have in December?

The average day length in December in Three Forks is 8h and 44min.

When is the sunrise / sunset in December in Three Forks?

In December, on the first day of the month, sunrise is at 7:48 am and sunset at 4:42 pm. On the last day of the month, in Three Forks, Montana, sunrise is at 8:07 am and sunset at 4:51 pm MST.

How many hours of sunshine does Three Forks have in December?

In December, the average sunshine duration is 6.1h.

What is the month with the lowest UV index in Three Forks?

With an average maximum UV index of 1, December is the month with the lowest UV index in Three Forks.

How high is the UV index in December in Three Forks?

In December, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents 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
Three Forks, MT

Average temperature in December - Three Forks, MT
  • Average high temperature in December: 28°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28°F).

  • Average low temperature in December: 12.7°F

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (12.7°F).

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Average pressure in December
Three Forks, MT

Average pressure in December - Three Forks, MT
  • Average pressure in December: 30.19"Hg

The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Three Forks, MT

Average wind speed in December - Three Forks, MT
  • Average wind speed in December: 4.8mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in December
Three Forks, MT

Average humidity in December - Three Forks, MT
  • Average humidity in December: 84%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (44%).

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Average rainfall in December
Three Forks, MT

Average rainfall in December - Three Forks, MT
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is August (0.51").

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Average rainfall days in December
Three Forks, MT

Average rainfall days in December - Three Forks, MT
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is April (16.5 days).
The month with the least rainy days is August (7.6 days).

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Average snowfall in December
Three Forks, MT

Average snowfall in December - Three Forks, MT
  • Average snowfall in December: 4.72"

The month with the highest snowfall is February (6.02").
The months with the least snowfall are July and August (0").

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Average snowfall days in December
Three Forks, MT

Average snowfall days in December - Three Forks, MT
  • Average snowfall days in December: 14.8 days

The month with the highest number of snowfall days is February (16.5 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
Three Forks, MT

Average daylight in December / Average sunshine in December - Three Forks, MT
  • Average daylight in December: 8h and 4min

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 42min).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

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Average sunshine days in December
Three Forks, MT

Average sunshine days in December - Three Forks, MT
  • Average sunshine days in December: 14.4 days

The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is April (9.3 days).

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Average UV index in December
Three Forks, MT

Average UV index in December - Three Forks, MT
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Three Forks, MT

Average cloud cover in December - Three Forks, MT
  • Average cloud cover in December: 38

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in December
Three Forks, MT

Average visibility in December - Three Forks, 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 month with the lowest visibility is January (4mi).

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Three Forks, Montana, USA

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