December weather forecast
Marcus, WA

Weather in December

The first month of the winter, December, is still a freezing cold month in Marcus, Washington, with temperature in the range of an average low of 16.9°F (-8.4°C) and an average high of 28.9°F (-1.7°C).

Temperature

The coldest month is December, with an average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 16.9°F (-8.4°C).

Humidity

In Marcus, the average relative humidity in December is 91%.

Rainfall

In December, the rain falls for 11.7 days. Throughout December, 1.61" (41mm) of precipitation is accumulated. Throughout the year, in Marcus, Washington, there are 156.3 rainfall days, and 16.18" (411mm) of precipitation is accumulated.

Snowfall

January through April, September through December are months with snowfall. In Marcus, during 13.7 snowfall days, 6.5" (165mm) of snow is typically accumulated. In Marcus, Washington, during the entire year, snow falls for 53.2 days and aggregates up to 25.16" (639mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 22min of daylight.
On the first day of the month, sunrise is at 7:23 am and sunset at 3:58 pm. On the last day of December, sunrise is at 7:44 am and sunset at 4:06 pm PST.

Sunshine

The average sunshine in December is 4.3h.

UV index

The months with the lowest UV index in Marcus are January, February, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
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. A wide-brim hat offers excellent sun protection for the 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.
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FAQ

What is the coldest month in Marcus?

The coldest month is December, with an average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 16.9°F (-8.4°C).

What is the average humidity in December in Marcus?

The average relative humidity in December in Marcus, Washington, is 91%.

How many days does it rain in December in Marcus?

In Marcus, in December, it is raining for 11.7 days, with typically 1.61" (41mm) of accumulated precipitation.

How many days does it snow in December in Marcus?

In Marcus, in December, during 13.7 snowfall days, 6.5" (165mm) of snow is typically accumulated.

What is the month with the shortest days in Marcus?

December has the shortest days of the year in Marcus, Washington, with an average of 8h and 22min of daylight.

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

In Marcus, the average day length in December is 8h and 22min.

When is the sunrise / sunset in December in Marcus?

In December, on the first day of the month, sunrise is at 7:23 am and sunset at 3:58 pm. On the last day of the month, in Marcus, Washington, sunrise is at 7:44 am and sunset at 4:06 pm PST.

How many hours of sunshine does Marcus have in December?

In Marcus, Washington, the average sunshine duration in December is 4.3h.

What is the month with the lowest UV index in Marcus?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Marcus, Washington.

What is the UV index intensity in December in Marcus?

The average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Marcus, WA

Average temperature in December - Marcus, WA
  • Average high temperature in December: 28.9°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (28.9°F).

  • Average low temperature in December: 16.9°F

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is February (16°F).

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Average pressure in December
Marcus, WA

Average pressure in December - Marcus, WA
  • Average pressure in December: 30.18"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).

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Average wind speed in December
Marcus, WA

Average wind speed in December - Marcus, WA
  • Average wind speed in December: 3mph

The windiest month (with the highest average wind speed) is April (3.9mph).
The calmest months (with the lowest average wind speed) are January, February and December (3mph).

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Average humidity in December
Marcus, WA

Average humidity in December - Marcus, WA
  • Average humidity in December: 91%

The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (50%).

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Average rainfall in December
Marcus, WA

Average rainfall in December - Marcus, WA
  • Average rainfall in December: 1.61"

The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is August (0.39").

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Average rainfall days in December
Marcus, WA

Average rainfall days in December - Marcus, WA
  • Average rainfall days in December: 11.7 days

The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (6.1 days).

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Average snowfall in December
Marcus, WA

Average snowfall in December - Marcus, WA
  • Average snowfall in December: 6.5"

The month with the highest snowfall is January (6.61").
The months with the least snowfall are May, June, July and August (0").

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Average snowfall days in December
Marcus, WA

Average snowfall days in December - Marcus, WA
  • Average snowfall days in December: 13.7 days

The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are May, June, July and August (0 days).

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

Average daylight in December / Average sunshine in December - Marcus, WA
  • Average daylight in December: 8h and 22min

The month with the longest days is June (Average daylight: 16h and 5min).
The month with the shortest days is December (Average daylight: 8h and 22min).

  • Average sunshine in December: 4h and 18min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in December
Marcus, WA

Average sunshine days in December - Marcus, WA
  • Average sunshine days in December: 12.3 days

The month with the most sunshine days is August (20.8 days).
The month with the least sunshine days is March (9 days).

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Average UV index in December
Marcus, WA

Average UV index in December - Marcus, WA
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in December
Marcus, WA

Average cloud cover in December - Marcus, WA
  • Average cloud cover in December: 55

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 14).

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Average visibility in December
Marcus, WA

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

The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).

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