December weather forecast
Clinton, WA

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Weather in December

December, the first month of the winter in Clinton, is still a cold month, with an average temperature ranging between max 42.6°F (5.9°C) and min 35.4°F (1.9°C).

Temperature

The coldest month is December, with an average high-temperature of 42.6°F (5.9°C) and an average low-temperature of 35.4°F (1.9°C).

Humidity

The months with the highest humidity in Clinton, Washington, are February and December, with an average relative humidity of 84%.

Rainfall

The month with the most rainfall in Clinton is December, when the rain falls for 18.1 days and typically aggregates up to 3.54" (90mm) of precipitation.

Snowfall

Months with snowfall in Clinton are January through April, November and December. In Clinton, in December, during 3.2 snowfall days, 1.18" (30mm) of snow is typically accumulated. Throughout the year, in Clinton, there are 16.3 snowfall days, and 10.08" (256mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 30min of daylight.
On the first day of December in Clinton, sunrise is at 7:39 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 4:26 pm PST.

Sunshine

The average sunshine in December in Clinton is 4.5h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 2 during December translates into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the coldest time of year in Clinton?

December is the coldest month in Clinton, Washington, with an average high-temperature of 42.6°F (5.9°C) and an average low-temperature of 35.4°F (1.9°C).

How cold is December in Clinton?

The average high-temperature and low-temperature in Clinton during December are 42.6°F (5.9°C) and 35.4°F (1.9°C) respectively.

What is the most humid month in Clinton?

The months with the highest humidity in Clinton, Washington, are February and December, with an average relative humidity of 84%.

What is the average humidity in December in Clinton?

The average relative humidity in December is 84%.

What is the wettest month in Clinton?

December is the month with the most rainfall. Rain falls for 18.1 days and accumulates 3.54" (90mm) of precipitation.

How much does it rain in Clinton in December?

In Clinton, during December, the rain falls for 18.1 days and regularly aggregates up to 3.54" (90mm) of precipitation.

How much does it snow in Clinton in December?

In Clinton, in December, during 3.2 snowfall days, 1.18" (30mm) of snow is typically accumulated.

What is the month with the shortest days in Clinton?

With an average of 8h and 30min of daylight, December has the shortest days of the year in Clinton.

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

In Clinton, the average day length in December is 8h and 28min.

What time are sunrise and sunset in December in Clinton?

In December, on the first day of the month, sunrise is at 7:39 am and sunset at 4:18 pm. On the last day of the month, in Clinton, sunrise is at 7:59 am and sunset at 4:26 pm PST.

How many hours of sunshine does Clinton have in December?

In Clinton, the average sunshine duration in December is 4.5h.

What are the months with the lowest UV index in Clinton?

The months with the lowest UV index in Clinton are January, February, November and December, with an average maximum UV index of 2.

What is the UV index reading in December in Clinton?

In Clinton, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
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
Clinton, WA

Average temperature in December - Clinton, WA
  • Average high temperature in December: 42.6°F

The warmest month (with the highest average high temperature) is August (72.7°F).
The month with the lowest average high temperature is December (42.6°F).

  • Average low temperature in December: 35.4°F

The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (35.4°F).

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Average pressure in December
Clinton, WA

Average pressure in December - Clinton, WA
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in December
Clinton, WA

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

The windiest month (with the highest average wind speed) is November (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

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Average humidity in December
Clinton, WA

Average humidity in December - Clinton, WA
  • Average humidity in December: 84%

The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in December
Clinton, WA

Average rainfall in December - Clinton, WA
  • Average rainfall in December: 3.54"

The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in December
Clinton, WA

Average rainfall days in December - Clinton, WA
  • Average rainfall days in December: 18.1 days

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.3 days).

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Average snowfall in December
Clinton, WA

Average snowfall in December - Clinton, WA
  • Average snowfall in December: 1.18"

The month with the highest snowfall is February (4.61").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Clinton, WA

Average snowfall days in December - Clinton, WA
  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Clinton, WA
  • Average daylight in December: 8h and 3min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in December
Clinton, WA

Average sunshine days in December - Clinton, WA
  • Average sunshine days in December: 10.7 days

The month with the most sunshine days is August (22.6 days).
The month with the least sunshine days is November (9.1 days).

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Average UV index in December
Clinton, WA

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

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Clinton, WA

Average cloud cover in December - Clinton, WA
  • Average cloud cover in December: 54

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in December
Clinton, WA

Average visibility in December - Clinton, WA
  • Average visibility in December: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Clinton, Washington, USA

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