December weather forecast and climate
Whitetail, MT

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

Temperature

In Whitetail, Montana, the average high-temperature significantly decreases, from a wintry 36.3°F (2.4°C) in November, to a subzero cold 21.9°F (-5.6°C). The average low-temperature, is 10°F (-12.2°C).

Humidity

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

Rainfall

In Whitetail, during December, the rain falls for 3.6 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Whitetail, during the entire year, the rain falls for 93.3 days and collects up to 12.01" (305mm) of precipitation.

Snowfall

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

Daylight

With an average of 8.3h of daylight, December has the shortest days of the year in Whitetail.

Sunshine

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

UV index

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Whitetail?

In Whitetail, in December, the average high-temperature is 21.9°F (-5.6°C), and the average low-temperature is 10°F (-12.2°C).

What is the average humidity in December in Whitetail?

In Whitetail, Montana, the average relative humidity in December is 87%.

How much does it rain in Whitetail in December?

In Whitetail, Montana, 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 Whitetail?

In December, in Whitetail, it is snowing for 13 days. Throughout December, 3.19" (81mm) of snow is accumulated.

What is the month with the shortest days in Whitetail?

The month with the shortest days is December, with an average of 8.3h of daylight.

How many hours of daylight does Whitetail have in December?

In December, the average length of the day in Whitetail, Montana, is 8.3h.

How long on average sun shines in December in Whitetail?

The average sunshine in December is 4.2h.

How high is the UV index in December in Whitetail?

In Whitetail, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays.
Average temperature in December - Whitetail, MT
  • Average high temperature in December: -5.6°C

The warmest month (with the highest average high temperature) is July (27.8°C).
The month with the lowest average high temperature is February (-6.8°C).

  • Average low temperature in December: -12.2°C

The month with the highest average low temperature is July (16.1°C).
The coldest month (with the lowest average low temperature) is February (-14.3°C).

Average pressure in December - Whitetail, MT
  • Average pressure in December: 1020.4mbar

The month with the highest atmospheric pressure is February (1021.6mbar).
The month with the lowest atmospheric pressure is June (1010.2mbar).

Average wind speed in December - Whitetail, MT
  • Average wind speed in December: 15.9km/h

The windiest month (with the highest average wind speed) is April (17.8km/h).
The calmest month (with the lowest average wind speed) is February (14.8km/h).

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

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

Average rainfall in December - Whitetail, MT
  • Average rainfall in December: 13mm

The wettest month (with the highest rainfall) is June (55mm).
The driest month (with the least rainfall) is February (12mm).

Average rainfall days in December - Whitetail, 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).

Average snowfall in December - Whitetail, MT
  • Average snowfall in December: 81mm

The month with the highest snowfall is November (95mm).
Months with the least snowfall are June, July, August and September (0mm).

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

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

Average daylight in December / Average sunshine in December - Whitetail, MT
  • Average daylight in December: 8.3h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.3h).

  • Average sunshine in December: 4.2h

The month with the most sunshine is July (Average sunshine: 11.7h).
The month with the least sunshine is February (Average sunshine: 3.9h).

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

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

Average UV index in December - Whitetail, 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).

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

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

Average visibility in December - Whitetail, MT
  • Average visibility in December: 8km

Months with the highest visibility are May, June, July, August, September and October (10km).
Months with the lowest visibility are January, February, March and December (8km).