December weather forecast
Pinesdale, MT

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Weather in December

The first month of the winter, December, is also a subzero cold month in Pinesdale, Montana, with an average temperature ranging between max 26.8°F (-2.9°C) and min 14°F (-10°C).

Temperature

Pinesdale witnesses the coldest weather in December, with temperatures averaging a high of 26.8°F (-2.9°C) and a low of 14°F (-10°C).

Humidity

The average relative humidity in December is 87%.

Rainfall

In December, the rain falls for 12.9 days. Throughout December, 1.97" (50mm) of precipitation is accumulated. In Pinesdale, during the entire year, the rain falls for 163.6 days and collects up to 20.83" (529mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Pinesdale, Montana, in December, during 18.6 snowfall days, 10.55" (268mm) of snow is typically accumulated. In Pinesdale, during the entire year, snow falls for 101.1 days and aggregates up to 59.17" (1503mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 8:00 am and sunset at 4:52 pm. On the last day of December, sunrise is at 8:19 am and sunset at 5:00 pm MST.

Sunshine

January and December, with an average of 5.4h of sunshine, are months with the least sunshine.

UV index

February 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 minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 1 during December translates into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

December proves to be the coldest month, recording an average maximum temperature of 26.8°F (-2.9°C) and a minimum temperature of 14°F (-10°C).

How cold is it in December?

The average high-temperature and low-temperature during December are 26.8°F (-2.9°C) and 14°F (-10°C) respectively.

What is the average humidity in December?

The average relative humidity in December is 87%.

How much does it rain in December?

In Pinesdale, in December, it is raining for 12.9 days, with typically 1.97" (50mm) of accumulated precipitation.

How much does it snow in December?

In Pinesdale, in December, snow falls for 18.6 days, with typically accumulated 10.55" (268mm) of snow.

What is the month with the shortest days?

The month with the shortest days in Pinesdale is December, with an average of 8h and 42min of daylight.

How many hours of daylight does Pinesdale have in December?

In Pinesdale, the average day length in December is 8h and 40min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 8:00 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 8:19 am and sunset at 5:00 pm MST.

What is the month with the least sunshine?

The months with the least sunshine are January and December, with an average of 5.4h of sunshine.

How many hours of sunshine does Pinesdale have in December?

In Pinesdale, the average sunshine duration in December is 5.4h.

When is the lowest UV index?

February and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index reading in December?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
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
Pinesdale, MT

Average temperature in December - Pinesdale, MT
  • Average high temperature in December: 26.8°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).

  • Average low temperature in December: 14°F

The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).

Average pressure in December
Pinesdale, MT

Average pressure in December - Pinesdale, MT
  • Average pressure in December: 30.19"Hg

The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Pinesdale, MT

Average wind speed in December - Pinesdale, MT
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

Average humidity in December
Pinesdale, MT

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

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).

Average rainfall in December
Pinesdale, MT

Average rainfall in December - Pinesdale, MT
  • Average rainfall in December: 1.97"

The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").

Average rainfall days in December
Pinesdale, MT

Average rainfall days in December - Pinesdale, MT
  • Average rainfall days in December: 12.9 days

The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).

Average snowfall in December
Pinesdale, MT

Average snowfall in December - Pinesdale, MT
  • Average snowfall in December: 10.55"

The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Pinesdale, MT

Average snowfall days in December - Pinesdale, MT
  • Average snowfall days in December: 18.6 days

The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Pinesdale, MT

Average daylight in December / Average sunshine in December - Pinesdale, 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 2min

The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

Average sunshine days in December
Pinesdale, MT

Average sunshine days in December - Pinesdale, MT
  • Average sunshine days in December: 10 days

The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).

Average UV index in December
Pinesdale, MT

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

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

Average cloud cover in December
Pinesdale, MT

Average cloud cover in December - Pinesdale, MT
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in December
Pinesdale, MT

Average visibility in December - Pinesdale, MT
  • Average visibility in December: 4mi

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

Pinesdale, Montana, USA

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