December weather forecast
Otter, MT

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Weather in December

December, the first month of the winter in Otter, is also a subzero cold month, with temperature in the range of an average low of 16.7°F (-8.5°C) and an average high of 31.1°F (-0.5°C).

Temperature

December, having an average high-temperature of 31.1°F (-0.5°C) and an average low-temperature of 16.7°F (-8.5°C), is the coldest month.

Humidity

In Otter, the average relative humidity in December is 75%.

Rainfall

December is the month with the least rainfall. Rain falls for 6.8 days and accumulates 0.67" (17mm) of precipitation.

Snowfall

Months with snowfall in Otter are January through May, September through December. In Otter, Montana, in December, during 11.2 snowfall days, 3.62" (92mm) of snow is typically accumulated. Throughout the year, there are 65.3 snowfall days, and 28.82" (732mm) of snow is accumulated.

Daylight

With an average of 8h and 48min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:24 am and sunset at 4:23 pm. On the last day of December, in Otter, sunrise is at 7:43 am and sunset at 4:32 pm MST.

Sunshine

In Otter, the average sunshine in December is 6.1h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: In December, the maximum UV index of 2 suggests these recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. 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 time of the year is the coldest in Otter?

In Otter, December is the month with the lowest recorded average temperatures, measuring a high of 31.1°F (-0.5°C) and a low of 16.7°F (-8.5°C).

How cold is it in Otter in December?

The average high-temperature, in December, in Otter, is 31.1°F (-0.5°C), while the average low-temperature is 16.7°F (-8.5°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is estimated at 82.4°F (28°C).

What is the average humidity in December in Otter?

The average relative humidity in December is 75%.

What is the driest month in Otter?

The month with the least rainfall is December, when the rain falls for 6.8 days and typically collects 0.67" (17mm) of precipitation.

How much does it rain in Otter in December?

In Otter, Montana, in December, during 6.8 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How many days does it snow in December in Otter?

In Otter, during December, snow falls for 11.2 days and regularly aggregates up to 3.62" (92mm) of snow.

What is the month with the shortest days in Otter?

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 Otter?

The average day length in December is 8h and 49min.

What time are sunrise and sunset in December in Otter?

On the first day of December in Otter, sunrise is at 7:24 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:32 pm MST.

How many hours of sunshine does Otter have in December?

The average sunshine duration in December in Otter is 6.1h.

When is the lowest UV index in Otter?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December in Otter?

In December, the average daily maximum UV index in Otter is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Otter, MT

Average temperature in December - Otter, MT
  • Average high temperature in December: 31.1°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (31.1°F).

  • Average low temperature in December: 16.7°F

The month with the highest average low temperature is July (61.5°F).
The coldest months (with the lowest average low temperature) are January and February (16.2°F).

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Average pressure in December
Otter, MT

Average pressure in December - Otter, MT
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in December
Otter, MT

Average wind speed in December - Otter, MT
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and December (6.8mph).

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Average humidity in December
Otter, MT

Average humidity in December - Otter, MT
  • Average humidity in December: 75%

The months with the highest relative humidity are January and February (79%).
The month with the lowest relative humidity is August (40%).

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Average rainfall in December
Otter, MT

Average rainfall in December - Otter, MT
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is December (0.67").

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Average rainfall days in December
Otter, MT

Average rainfall days in December - Otter, MT
  • Average rainfall days in December: 6.8 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall in December
Otter, MT

Average snowfall in December - Otter, MT
  • Average snowfall in December: 3.62"

The month with the highest snowfall is February (5.2").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Otter, MT

Average snowfall days in December - Otter, MT
  • Average snowfall days in December: 11.2 days

The month with the highest number of snowfall days is February (14.3 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
Otter, MT

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

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 6h and 1min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

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Average sunshine days in December
Otter, MT

Average sunshine days in December - Otter, MT
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is September (18.2 days).
The month with the least sunshine days is May (9.6 days).

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Average UV index in December
Otter, MT

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

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in December
Otter, MT

Average cloud cover in December - Otter, MT
  • Average cloud cover in December: 37

The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 14).

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Average visibility in December
Otter, MT

Average visibility in December - Otter, MT
  • Average visibility in December: 6mi

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

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Otter, Montana, USA

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