December weather forecast
Cougar, WA

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Weather in December

December, the first month of the winter in Cougar, is still a cold month, with an average temperature ranging between max 40.6°F (4.8°C) and min 30.7°F (-0.7°C).

Temperature

Cougar's December weather reaches an average high of 40.6°F (4.8°C) and an average low of 30.7°F (-0.7°C), making it the coldest month.

Humidity

In December, the average relative humidity in Cougar is 86%.

Rainfall

In Cougar, Washington, during December, the rain falls for 19.5 days and regularly aggregates up to 6.97" (177mm) of precipitation. In Cougar, during the entire year, the rain falls for 182.3 days and collects up to 48.11" (1222mm) of precipitation.

Snowfall

Months with snowfall in Cougar are January through March, November and December. In Cougar, in December, snow falls for 2 days, with typically accumulated 1.14" (29mm) of snow. Throughout the year, in Cougar, there are 11.4 snowfall days, and 11.1" (282mm) of snow is accumulated.

Daylight

With an average of 8h and 42min of daylight, December has the shortest days of the year in Cougar.
On the first day of the month, sunrise is at 7:31 am and sunset at 4:25 pm. On the last day of December, in Cougar, sunrise is at 7:51 am and sunset at 4:33 pm PST.

Sunshine

The average sunshine in December is 3.3h.

UV index

In December, the average daily maximum UV index in Cougar is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 2 suggests these recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Cougar?

December, known for its average high temperature of 40.6°F (4.8°C) and an average low temperature of 30.7°F (-0.7°C), is the coldest month in Cougar.

Is it cold in Cougar during December?

An average high-temperature, in December, in Cougar, is 40.6°F (4.8°C) and the average low-temperature is 30.7°F (-0.7°C).

What is the average humidity in December in Cougar?

In Cougar, Washington, the average relative humidity in December is 86%.

How many days does it rain in December in Cougar?

In Cougar, Washington, in December, it is raining for 19.5 days, with typically 6.97" (177mm) of accumulated precipitation.

How much does it snow in Cougar in December?

In Cougar, during December, snow falls for 2 days and regularly aggregates up to 1.14" (29mm) of snow.

What is the month with the shortest days in Cougar?

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

How many hours of daylight does Cougar have in December?

In Cougar, Washington, the average day length in December is 8h and 43min.

When are sunrise and sunset in December in Cougar?

On the first day of December in Cougar, sunrise is at 7:31 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 4:33 pm PST.

How many hours of sunshine does Cougar have in December?

In Cougar, the average sunshine duration in December is 3.3h.

What is the UV index intensity in December in Cougar?

In December, the average daily maximum UV index in Cougar, Washington, is 2. A UV Index value of 2, and less, symbolizes a low health risk from 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
Cougar, WA

Average temperature in December - Cougar, WA
  • Average high temperature in December: 40.6°F

The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (40.6°F).

  • Average low temperature in December: 30.7°F

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).

Average pressure in December
Cougar, WA

Average pressure in December - Cougar, WA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

Average wind speed in December
Cougar, WA

Average wind speed in December - Cougar, WA
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is January (6.1mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

Average humidity in December
Cougar, WA

Average humidity in December - Cougar, WA
  • Average humidity in December: 86%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (69%).

Average rainfall in December
Cougar, WA

Average rainfall in December - Cougar, WA
  • Average rainfall in December: 6.97"

The wettest month (with the highest rainfall) is January (7.64").
The driest month (with the least rainfall) is July (0.43").

Average rainfall days in December
Cougar, WA

Average rainfall days in December - Cougar, WA
  • Average rainfall days in December: 19.5 days

The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (5.6 days).

Average snowfall in December
Cougar, WA

Average snowfall in December - Cougar, WA
  • Average snowfall in December: 1.14"

The month with the highest snowfall is February (4.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Cougar, WA

Average snowfall days in December - Cougar, WA
  • Average snowfall days in December: 2 days

The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Cougar, WA

Average daylight in December / Average sunshine in December - Cougar, WA
  • 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: 3h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).

Average sunshine days in December
Cougar, WA

Average sunshine days in December - Cougar, WA
  • Average sunshine days in December: 9.2 days

The month with the most sunshine days is August (23.4 days).
The month with the least sunshine days is February (8.1 days).

Average UV index in December
Cougar, WA

Average UV index in December - Cougar, WA
  • Average UV index in December: 2

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

Average cloud cover in December
Cougar, WA

Average cloud cover in December - Cougar, WA
  • Average cloud cover in December: 66

The months with the most cloud cover are February and December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in December
Cougar, WA

Average visibility in December - Cougar, WA
  • Average visibility in December: 4mi

The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).

Cougar, Washington, USA

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