December weather forecast
Fortine, MT

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Weather in December

The first month of the winter, December, is still a freezing cold month in Fortine, Montana, with an average temperature fluctuating between 13.1°F (-10.5°C) and 25.5°F (-3.6°C).

Temperature

In Fortine, Montana, the lowest temperatures are generally noted in December, averaging a high of 25.5°F (-3.6°C) and a low of 13.1°F (-10.5°C).

Humidity

The average relative humidity in December in Fortine is 93%.

Rainfall

In Fortine, Montana, in December, during 8.6 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, there are 136.3 rainfall days, and 15.35" (390mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In December, in Fortine, it is snowing for 22.1 days. Throughout December, 9.41" (239mm) of snow is accumulated. Throughout the year, there are 110.7 snowfall days, and 46.81" (1189mm) of snow is accumulated.

Daylight

With an average of 8h and 18min of daylight, December has the shortest days of the year in Fortine.
On the first day of the month, sunrise is at 8:12 am and sunset at 4:45 pm. On the last day of December, in Fortine, sunrise is at 8:32 am and sunset at 4:53 pm MST.

Sunshine

In Fortine, the average sunshine in December is 3.5h.

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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum daily UV index of 1 during December morphs into the following directions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

What time of the year is the coldest in Fortine?

With average high and low temperatures of 25.5°F (-3.6°C) and 13.1°F (-10.5°C) respectively, December is Fortine's coldest month.

How cold is December in Fortine?

During December, Fortine experiences an average high-temperature of 25.5°F (-3.6°C) and a low-temperature of 13.1°F (-10.5°C).

What is the average humidity in December in Fortine?

The average relative humidity in December in Fortine is 93%.

How much does it rain in Fortine in December?

In December, in Fortine, Montana, the rain falls for 8.6 days. Throughout December, 1.73" (44mm) of precipitation is accumulated.

How many days does it snow in December in Fortine?

In Fortine, in December, snow falls for 22.1 days, with typically accumulated 9.41" (239mm) of snow.

What is the month with the shortest days in Fortine?

With an average of 8h and 18min of daylight, December has the shortest days of the year in Fortine.

How many hours of daylight does Fortine have in December?

In Fortine, Montana, the average day length in December is 8h and 21min.

What time are sunrise and sunset in December in Fortine?

On the first day of December, sunrise is at 8:12 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 8:32 am and sunset at 4:53 pm MST.

How many hours of sunshine does Fortine have in December?

The average sunshine duration in December in Fortine, Montana, is 3.5h.

What are the months with the lowest UV index in Fortine?

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

How high is the UV index in December in Fortine?

In Fortine, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health threat from exposure to Sun's UV rays.
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
Fortine, MT

Average temperature in December - Fortine, MT
  • Average high temperature in December: 25.5°F

The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is December (25.5°F).

  • Average low temperature in December: 13.1°F

The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).

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Average pressure in December
Fortine, MT

Average pressure in December - Fortine, MT
  • Average pressure in December: 30.16"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Fortine, MT

Average wind speed in December - Fortine, MT
  • Average wind speed in December: 3.4mph

The windiest month (with the highest average wind speed) is June (4.4mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).

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Average humidity in December
Fortine, MT

Average humidity in December - Fortine, MT
  • Average humidity in December: 93%

The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in December
Fortine, MT

Average rainfall in December - Fortine, MT
  • Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is August (0.39").

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Average rainfall days in December
Fortine, MT

Average rainfall days in December - Fortine, MT
  • Average rainfall days in December: 8.6 days

The month with the highest number of rainy days is April (17 days).
The month with the least rainy days is August (6.1 days).

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Average snowfall in December
Fortine, MT

Average snowfall in December - Fortine, MT
  • Average snowfall in December: 9.41"

The month with the highest snowfall is February (10").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Fortine, MT

Average snowfall days in December - Fortine, MT
  • Average snowfall days in December: 22.1 days

The month with the highest number of snowfall days is December (22.1 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Fortine, MT

Average daylight in December / Average sunshine in December - Fortine, 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 3min

The month with the most sunshine is August (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
Fortine, MT

Average sunshine days in December - Fortine, MT
  • Average sunshine days in December: 8.5 days

The month with the most sunshine days is August (21.6 days).
The month with the least sunshine days is March (6.3 days).

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Average UV index in December
Fortine, MT

Average UV index in December - Fortine, 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).

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Average cloud cover in December
Fortine, MT

Average cloud cover in December - Fortine, MT
  • Average cloud cover in December: 67

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 15).

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Average visibility in December
Fortine, MT

Average visibility in December - Fortine, MT
  • Average visibility in December: 3mi

The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).

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Fortine, Montana, USA

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