December weather forecast and climate
Sixmile Crossing, MT

The first month of the winter, December, is still a freezing cold month in Sixmile Crossing, Montana, with average temperature ranging between max 28.9°F (-1.7°C) and min 16.3°F (-8.7°C).

Temperature

In Sixmile Crossing, the average high-temperature drops, from a cold 42.3°F (5.7°C) in November, to a subzero cold 28.9°F (-1.7°C). The average low-temperature, is 16.3°F (-8.7°C).

Humidity

In December, the average relative humidity in Sixmile Crossing, Montana, is 78%.

Rainfall

Months with the least rainfall are November and December Rain falls for 2.6 days and accumulates 0.28" (7mm) of rain.

Snowfall

January through May, October through December are months with snowfall in Sixmile Crossing. In Sixmile Crossing, in December, during 9.2 snowfall days, 1.5" (38mm) of snow is typically accumulated. In Sixmile Crossing, during the entire year, snow falls for 43.4 days, and aggregates up to 9.13" (232mm) of snow.

Daylight

With an average of 8.8h of daylight, December has the shortest days of the year in Sixmile Crossing.

Sunshine

January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Sixmile Crossing?

In December, in Sixmile Crossing, the average high-temperature is 28.9°F (-1.7°C), and the average low-temperature is 16.3°F (-8.7°C).

What is the average humidity in December in Sixmile Crossing?

In Sixmile Crossing, Montana, the average relative humidity in December is 78%.

How much does it rain in Sixmile Crossing in December?

In Sixmile Crossing, in December, during 2.6 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

What is the driest month in Sixmile Crossing?

Months with the least rainfall in Sixmile Crossing, Montana, are November and December Rain falls for 2.6 days and accumulates 0.28" (7mm) of rain.

How much does it snow in Sixmile Crossing in December?

In December, in Sixmile Crossing, Montana, it is snowing for 9.2 days. Throughout December, 1.5" (38mm) of snow is accumulated.

What is the month with the shortest days in Sixmile Crossing?

The month with the shortest days in Sixmile Crossing is December, with an average of 8.8h of daylight.

How many hours of daylight does Sixmile Crossing have in December?

In December, the average length of the day in Sixmile Crossing, Montana, is 8.8h.

What is the month with the least sunshine in Sixmile Crossing?

Months with the least sunshine in Sixmile Crossing, Montana, are January, February and December, with an average of 5.1h of sunshine.

How many hours of sunshine does Sixmile Crossing have in December?

In Sixmile Crossing, the average sunshine in December is 5.1h.

What is the month with the lowest UV index in Sixmile Crossing?

Months with the lowest UV index in Sixmile Crossing are January through March, November and December, with an average maximum UV index of 2.

What is the UV index reading in December in Sixmile Crossing?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.
Average temperature in December - Sixmile Crossing, MT
  • Average high temperature in December: 28.9°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in December: 16.3°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure in December - Sixmile Crossing, MT
  • Average pressure in December: 30.13"

Months with the highest atmospheric pressure are January and February (30.14").
The month with the lowest atmospheric pressure is June (29.83").

Average wind speed in December - Sixmile Crossing, MT
  • Average wind speed in December: 9.7mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest months (with the lowest average wind speed) are February and August (9.3mph).

Average humidity in December - Sixmile Crossing, MT
  • Average humidity in December: 78%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (39%).

Average rainfall in December - Sixmile Crossing, MT
  • Average rainfall in December: 0.28"

The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are November and December (0.28").

Average rainfall days in December - Sixmile Crossing, MT
  • Average rainfall days in December: 2.6 days

The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is December (2.6 days).

Average snowfall in December - Sixmile Crossing, MT
  • Average snowfall in December: 1.5"

The month with the highest snowfall is February (2.2").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in December - Sixmile Crossing, MT
  • Average snowfall days in December: 9.2 days

The month with the highest number of snowfall days is January (10.1 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight in December / Average sunshine in December - Sixmile Crossing, MT
  • Average daylight in December: 8.8h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in December: 5.1h

The month with the most sunshine is July (Average sunshine: 11.8h).
Months with the least sunshine are January, February and December (Average sunshine: 5.1).

Average sunshine days in December - Sixmile Crossing, MT
  • Average sunshine days in December: 19.9 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is April (16.5 days).

Average UV index in December - Sixmile Crossing, MT
  • Average UV index in December: 2

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

Average cloud cover in December - Sixmile Crossing, MT
  • Average cloud cover in December: 46

Months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 15).

Average visibility in December - Sixmile Crossing, MT
  • Average visibility in December: 6mi

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