December weather forecast
Bonney Lake, WA

Weather in December

December, the first month of the winter in Bonney Lake, is still a cold month, with an average temperature fluctuating between 41.4°F (5.2°C) and 32°F (0°C).

Temperature

With an average high-temperature of 41.4°F (5.2°C) and an average low-temperature of 32°F (0°C), December is the coldest month.

Humidity

The average relative humidity in December in Bonney Lake is 86%.

Rainfall

December is the month with the most rainfall. Rain falls for 19.3 days and accumulates 5.35" (136mm) of precipitation.

Snowfall

Months with snowfall in Bonney Lake are January through April, November and December. In December, in Bonney Lake, it is snowing for 2.9 days. Throughout December, 1.26" (32mm) of snow is accumulated. Throughout the year, in Bonney Lake, there are 15.8 snowfall days, and 9.09" (231mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Bonney Lake, with an average of 8h and 34min of daylight.
On the first day of December in Bonney Lake, sunrise is at 7:34 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 4:28 pm PST.

Sunshine

The month with the least sunshine in Bonney Lake is December, with an average of 4.2h of sunshine.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 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 solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Bonney Lake?

With an average high-temperature of 41.4°F (5.2°C) and an average low-temperature of 32°F (0°C), December is the coldest month in Bonney Lake, Washington.

What is the temperature in December in Bonney Lake?

In December, in Bonney Lake, Washington, the average high-temperature is 41.4°F (5.2°C), and the average low-temperature is 32°F (0°C).

What is the average humidity in December in Bonney Lake?

The average relative humidity in December is 86%.

What is the rainiest month in Bonney Lake?

The month with the most rainfall in Bonney Lake, Washington, is December, when the rain falls for 19.3 days and typically aggregates up to 5.35" (136mm) of precipitation.

How much does it rain in Bonney Lake in December?

In December, the rain falls for 19.3 days. Throughout December, 5.35" (136mm) of precipitation is accumulated.

How many days does it snow in December in Bonney Lake?

In Bonney Lake, Washington, in December, during 2.9 snowfall days, 1.26" (32mm) of snow is typically accumulated.

What is the month with the shortest days in Bonney Lake?

The month with the shortest days is December, with an average of 8h and 34min of daylight.

What is the average length of the day in December in Bonney Lake?

The average day length in December in Bonney Lake, Washington, is 8h and 34min.

When is the sunrise / sunset in December in Bonney Lake?

On the first day of December, sunrise is at 7:34 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 4:28 pm PST.

What is the month with the least sunshine in Bonney Lake?

December has the least sunshine of the year in Bonney Lake, with an average of 4.2h of sunshine.

How many hours of sunshine does Bonney Lake have in December?

The average sunshine duration in December in Bonney Lake, Washington, is 4.2h.

What are the months with the lowest UV index in Bonney Lake?

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Bonney Lake, Washington.

How high is the UV index in December in Bonney Lake?

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

Average temperature in December - Bonney Lake, WA
  • Average high temperature in December: 41.4°F

The warmest month (with the highest average high temperature) is August (75.7°F).
The month with the lowest average high temperature is December (41.4°F).

  • Average low temperature in December: 32°F

The month with the highest average low temperature is August (50.9°F).
The coldest month (with the lowest average low temperature) is December (32°F).

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Average pressure in December
Bonney Lake, WA

Average pressure in December - Bonney Lake, WA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in December
Bonney Lake, WA

Average wind speed in December - Bonney Lake, WA
  • Average wind speed in December: 4.5mph

The windiest month (with the highest average wind speed) is January (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

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Average humidity in December
Bonney Lake, WA

Average humidity in December - Bonney Lake, WA
  • Average humidity in December: 86%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are July and August (70%).

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Average rainfall in December
Bonney Lake, WA

Average rainfall in December - Bonney Lake, WA
  • Average rainfall in December: 5.35"

The wettest month (with the highest rainfall) is December (5.35").
The driest month (with the least rainfall) is July (0.51").

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Average rainfall days in December
Bonney Lake, WA

Average rainfall days in December - Bonney Lake, WA
  • Average rainfall days in December: 19.3 days

The month with the highest number of rainy days is March (20.7 days).
The month with the least rainy days is August (6.8 days).

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Average snowfall in December
Bonney Lake, WA

Average snowfall in December - Bonney Lake, WA
  • Average snowfall in December: 1.26"

The month with the highest snowfall is February (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Bonney Lake, WA

Average snowfall days in December - Bonney Lake, WA
  • Average snowfall days in December: 2.9 days

The month with the highest number of snowfall days is February (5.3 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
Bonney Lake, WA

Average daylight in December / Average sunshine in December - Bonney Lake, WA
  • Average daylight in December: 8h and 34min

The month with the longest days is June (Average daylight: 15h and 52min).
The month with the shortest days is December (Average daylight: 8h and 34min).

  • Average sunshine in December: 4h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

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Average sunshine days in December
Bonney Lake, WA

Average sunshine days in December - Bonney Lake, WA
  • Average sunshine days in December: 10.1 days

The month with the most sunshine days is August (22 days).
The month with the least sunshine days is February (8.2 days).

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Average UV index in December
Bonney Lake, WA

Average UV index in December - Bonney Lake, 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, October, November and December (UV index 2).

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Average cloud cover in December
Bonney Lake, WA

Average cloud cover in December - Bonney Lake, WA
  • Average cloud cover in December: 56

The months with the most cloud cover are January and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in December
Bonney Lake, WA

Average visibility in December - Bonney Lake, WA
  • Average visibility in December: 4mi

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

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