December weather forecast
Outlook, MT

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Weather in December

The first month of the winter, December, is still a freezing cold month in Outlook, Montana, with an average temperature ranging between max 21.9°F (-5.6°C) and min 10°F (-12.2°C).

Temperature

The arrival of December brings a distinct temperature shift, with the average high-temperature dropping from a cold 36.3°F (2.4°C) in November to a subzero cold 21.9°F (-5.6°C). Throughout the month of December, Outlook witnesses an average low-temperature of 10°F (-12.2°C).

Humidity

The average relative humidity in December is 87%.

Rainfall

In Outlook, Montana, in December, it is raining for 3.6 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, there are 93.3 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Outlook, in December, during 13 snowfall days, 3.19" (81mm) of snow is typically accumulated. Throughout the year, there are 66.5 snowfall days, and 19.02" (483mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 18min of daylight.
On the first day of December in Outlook, sunrise is at 7:32 am and sunset at 4:04 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 4:12 pm MST.

Sunshine

In Outlook, Montana, the average sunshine in December is 4.2h.

UV index

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high UV index of 2 in December translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

How cold is December in Outlook?

In December, in Outlook, the average high-temperature is 21.9°F (-5.6°C), and the average low-temperature is 10°F (-12.2°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 82.4°F (28°C).

What is the average humidity in December in Outlook?

In December, the average relative humidity is 87%.

How many days does it rain in December in Outlook?

In Outlook, in December, it is raining for 3.6 days, with typically 0.51" (13mm) of accumulated precipitation.

How many days does it snow in December in Outlook?

In Outlook, Montana, during December, snow falls for 13 days and regularly aggregates up to 3.19" (81mm) of snow.

What is the month with the shortest days in Outlook?

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

How many hours of daylight does Outlook have in December?

In December, the average day length in Outlook is 8h and 20min.

When are sunrise and sunset in December in Outlook?

In December, on the first day of the month, sunrise is at 7:32 am and sunset at 4:04 pm. On the last day of the month, in Outlook, Montana, sunrise is at 7:52 am and sunset at 4:12 pm MST.

How many hours of sunshine does Outlook have in December?

In Outlook, Montana, the average sunshine duration in December is 4.2h.

What is the UV index intensity in December in Outlook?

The average daily maximum UV index in December in Outlook is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Outlook, MT

Average temperature in December - Outlook, MT
  • Average high temperature in December: 21.9°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is February (19.8°F).

  • Average low temperature in December: 10°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is February (6.3°F).

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Average pressure in December
Outlook, MT

Average pressure in December - Outlook, MT
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in December
Outlook, MT

Average wind speed in December - Outlook, MT
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is February (9.2mph).

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Average humidity in December
Outlook, MT

Average humidity in December - Outlook, MT
  • Average humidity in December: 87%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is August (46%).

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Average rainfall in December
Outlook, MT

Average rainfall in December - Outlook, MT
  • Average rainfall in December: 0.51"

The wettest month (with the highest rainfall) is June (2.17").
The driest month (with the least rainfall) is February (0.47").

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Average rainfall days in December
Outlook, MT

Average rainfall days in December - Outlook, MT
  • Average rainfall days in December: 3.6 days

The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in December
Outlook, MT

Average snowfall in December - Outlook, MT
  • Average snowfall in December: 3.19"

The month with the highest snowfall is November (3.74").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Outlook, MT

Average snowfall days in December - Outlook, MT
  • Average snowfall days in December: 13 days

The month with the highest number of snowfall days is February (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Outlook, 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: 4h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

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Average sunshine days in December
Outlook, MT

Average sunshine days in December - Outlook, MT
  • Average sunshine days in December: 17.2 days

The month with the most sunshine days is August (20.1 days).
The months with the least sunshine days are February and June (13.8 days).

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Average UV index in December
Outlook, MT

Average UV index in December - Outlook, MT
  • Average UV index in December: 2

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

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Average cloud cover in December
Outlook, MT

Average cloud cover in December - Outlook, MT
  • Average cloud cover in December: 56

The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 19).

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Average visibility in December
Outlook, MT

Average visibility in December - Outlook, MT
  • Average visibility in December: 5mi

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

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Outlook, Montana, USA

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