Billings
Montana, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Billings, MT

The unique view of the forest of trees in the plains, on the sandstone bluffs in Billings, Montana, a beautiful cloudy sky above
The unique view of the forest of trees in the plains, on the sandstone bluffs in Billings, Montana, a beautiful cloudy sky above
The first month of the winter, December, is still a cold month in Billings, Montana, with average temperature ranging between min 17.8°F (-7.9°C) and max 35.2°F (1.8°C).

Temperature

The coldest month is December, with an average high-temperature of 35.2°F (1.8°C) and an average low-temperature of 17.8°F (-7.9°C).

Humidity

The most humid month in Billings, Montana, is December, with an average relative humidity of 60.9%.

Rainfall

In Billings, during December, the rain falls for 6.6 days and regularly aggregates up to 0.5" (12.7mm) of precipitation. Throughout the year, in Billings, Montana, there are 96.5 rainfall days, and 13.7" (347mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December.

Daylight

With an average of 8.7h of daylight, December has the shortest days of the year.

Sunshine

With an average of 3.8h of sunshine, December has the least sunshine of the year in Billings, Montana.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from the exposure to the Sun's UV radiation for the ordinary person.
In December, the average maximum UV index of 1 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 coldest month in Billings?

The coldest month in Billings is December, with an average high-temperature of 35.2°F (1.8°C) and an average low-temperature of 17.8°F (-7.9°C).

What is the temperature in December in Billings?

In Billings, in December, the average high-temperature is 35.2°F (1.8°C), and the average low-temperature is 17.8°F (-7.9°C).

What is the most humid month in Billings?

The most humid month is December, with an average relative humidity of 60.9%.

What is the average humidity in December in Billings?

The average relative humidity in December in Billings is 60.9%.

How much does it rain in Billings in December?

In December, in Billings, Montana, the rain falls for 6.6 days. Throughout December, 0.5" (12.7mm) of precipitation is accumulated.

How many days does it snow in December in Billings?

In Billings, during December, snow falls for 6.9 days and regularly aggregates up to 8.2" (208.3mm) of snow.

What is the month with the shortest days in Billings?

The month with the shortest days is December, with an average of 8.7h of daylight.

What is the average length of the day in December in Billings?

In Billings, the average length of the day in December is 8.7h.

What is the month with the least sunshine in Billings?

With an average of 3.8h of sunshine, December has the least sunshine of the year in Billings.

How many hours of sunshine does Billings have in December?

In December, the average sunshine in Billings, Montana, is 3.8h.

When is the lowest UV index in Billings?

Months with the lowest UV index are January and December, with an average maximum UV index of 1.

How high is the UV index in December in Billings?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in December - Billings, MT
  • Average high temperature in December: 35.2°F

The warmest month (with the highest average high temperature) is July (86.8°F).
The month with the lowest average high temperature is December (35.2°F).

  • Average low temperature in December: 17.8°F

The month with the highest average low temperature is July (58.8°F).
Coldest months (with the lowest average low temperature) are January and December (17.8°F).

Average humidity in December - Billings, MT
  • Average humidity in December: 60.9%

The month with the highest relative humidity is December (60.9%).
The month with the lowest relative humidity is August (44.5%).

Average rainfall in December - Billings, MT
  • Average rainfall in December: 0.5"

The wettest month (with the highest rainfall) is May (2.2").
Driest months (with the lowest rainfall) are January, February and December (0.5").

Average rainfall days in December - Billings, MT
  • Average rainfall days in December: 6.6 days

The month with the highest number of rainy days is May (12 days).
The month with the lowest number of rainy days is August (6 days).

Average snowfall in December - Billings, MT
  • Average snowfall in December: 8.2"

The month with the highest snowfall is March (10.2").
Months with the lowest snowfall are June, July and August (0").

Average snowfall days in December - Billings, MT
  • Average snowfall days in December: 6.9 days

Months with the highest number of snowfall days are March and December (6.9 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in December / Average sunshine in December - Billings, MT
  • Average daylight in December: 8.7h

The month with the longest days is June (Average daylight: 15.7h).
The month with shortest days is December (Average daylight: 8.7h).

  • Average sunshine in December: 3.8h

The month with most sunshine is July (Average sunshine: 11.5h).
The month with least sunshine is December (Average sunshine: 3.8h).

Average UV index in December - Billings, MT
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).