December weather forecast
Deer Lodge, MT

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Weather in December

In December, Deer Lodge is enveloped in the full embrace of winter, with average temperature plummeting to 25.5°F (-3.6°C). The shrinking daylight hours and a chilly wind sweeping across town amplify the wintry feel. Snowfall remains substantial throughout the month, peaking at 6.65in, and adding to the severe cold snap. The cloud cover percentage ascends to the second-highest for the year, while the lengthening number of snowfall days underscores the intensifying winter. Deer Lodge rounds out the year encapsulated in the crisp chill of December, completing another cycle of diverse weather patterns.

Temperature

December is the coldest month of the year, registering average temperatures as high as 25.5°F (-3.6°C) and as low as 11.7°F (-11.3°C).

Humidity

In December, the average relative humidity is 87%.

Rainfall

In Deer Lodge, during December, the rain falls for 8.8 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, there are 151.7 rainfall days, and 16.46" (418mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall in Deer Lodge. In December, it is snowing for 17 days. Throughout December, 6.65" (169mm) of snow is accumulated. In Deer Lodge, during the entire year, snow falls for 105 days and aggregates up to 49.69" (1262mm) of snow.

Daylight

With an average of 8h and 42min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:54 am and sunset at 4:45 pm. On the last day of December, sunrise is at 8:14 am and sunset at 4:54 pm MST.

Sunshine

In December, the average sunshine is 5.6h.

UV index

In Deer Lodge, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

Frequently asked questions

What time of the year is the coldest in Deer Lodge?

In Deer Lodge, the average lowest temperatures are observed in December, with a high of 25.5°F (-3.6°C) and a low of 11.7°F (-11.3°C).

How cold is December?

In December, the average high-temperature and low-temperature are 25.5°F (-3.6°C) and 11.7°F (-11.3°C) respectively.

What is the average humidity in December?

In Deer Lodge, the average relative humidity in December is 87%.

How many days does it rain in December?

In Deer Lodge, in December, it is raining for 8.8 days, with typically 0.91" (23mm) of accumulated precipitation.

How much does it snow in December?

In Deer Lodge, in December, during 17 snowfall days, 6.65" (169mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 8h and 42min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 8h and 40min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:54 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 8:14 am and sunset at 4:54 pm MST.

How long on average sun shines in December?

In December, the average sunshine duration in Deer Lodge is 5.6h.

What is the UV index intensity in December?

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

Average temperature in December - Deer Lodge, 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: 11.7°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (11.7°F).

Average pressure in December
Deer Lodge, MT

Average pressure in December - Deer Lodge, 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 (29.91"Hg).

Average wind speed in December
Deer Lodge, MT

Average wind speed in December - Deer Lodge, MT
  • Average wind speed in December: 6.5mph

The windiest months (with the highest average wind speed) are January and April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity in December
Deer Lodge, MT

Average humidity in December - Deer Lodge, MT
  • Average humidity in December: 87%

The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are July and August (49%).

Average rainfall in December
Deer Lodge, MT

Average rainfall in December - Deer Lodge, MT
  • Average rainfall in December: 0.91"

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.87").

Average rainfall days in December
Deer Lodge, MT

Average rainfall days in December - Deer Lodge, MT
  • Average rainfall days in December: 8.8 days

The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is December (8.8 days).

Average snowfall in December
Deer Lodge, MT

Average snowfall in December - Deer Lodge, MT
  • Average snowfall in December: 6.65"

The month with the highest snowfall is February (8.78").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Deer Lodge, MT

Average snowfall days in December - Deer Lodge, MT
  • Average snowfall days in December: 17 days

The month with the highest number of snowfall days is February (19.7 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Deer Lodge, MT

Average daylight in December / Average sunshine in December - Deer Lodge, 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: 5h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).

Average sunshine days in December
Deer Lodge, MT

Average sunshine days in December - Deer Lodge, MT
  • Average sunshine days in December: 13.5 days

The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is February (6.7 days).

Average UV index in December
Deer Lodge, MT

Average UV index in December - Deer Lodge, MT
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in December
Deer Lodge, MT

Average cloud cover in December - Deer Lodge, MT
  • Average cloud cover in December: 45

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 15).

Average visibility in December
Deer Lodge, MT

Average visibility in December - Deer Lodge, MT
  • Average visibility in December: 4mi

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

Deer Lodge, Montana, USA

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