December weather forecast
Brush Prairie, WA

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Weather in December

December, the first month of the winter in Brush Prairie, is also an icy month, with temperature in the range of an average low of 32.7°F (0.4°C) and an average high of 42.6°F (5.9°C).

Temperature

The coldest period is December, when temperatures fluctuate between an average high of 42.6°F (5.9°C) and a low of 32.7°F (0.4°C).

Humidity

In December, the average relative humidity is 85%.

Rainfall

In Brush Prairie, in December, it is raining for 19 days, with typically 5.94" (151mm) of accumulated precipitation. Throughout the year, there are 177.9 rainfall days, and 40.67" (1033mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In Brush Prairie, in December, during 1.5 snowfall days, 0.63" (16mm) of snow is typically accumulated. In Brush Prairie, during the entire year, snow falls for 9.8 days and aggregates up to 7.4" (188mm) of snow.

Daylight

The month with the shortest days in Brush Prairie is December, with an average of 8h and 42min of daylight.
On the first day of December, sunrise is at 7:31 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:36 pm PST.

Sunshine

In Brush Prairie, the average sunshine in December is 3.9h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Brush Prairie. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily high UV index of 2 in December leads to these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

What are the coldest months in Brush Prairie?

December, recording an average high temperature of 42.6°F (5.9°C) and a low temperature of 32.7°F (0.4°C), is Brush Prairie's coldest month.

How cold does it get in Brush Prairie in December?

In Brush Prairie, 42.6°F (5.9°C) is the average high-temperature and 32.7°F (0.4°C) is the average low-temperature during December.

What is the average humidity in December in Brush Prairie?

In December, the average relative humidity in Brush Prairie is 85%.

How many days does it rain in December in Brush Prairie?

In Brush Prairie, in December, it is raining for 19 days, with typically 5.94" (151mm) of accumulated precipitation.

How many days does it snow in December in Brush Prairie?

In Brush Prairie, in December, during 1.5 snowfall days, 0.63" (16mm) of snow is typically accumulated.

What is the month with the shortest days in Brush Prairie?

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

What is the average length of the day in December in Brush Prairie?

The average day length in December in Brush Prairie is 8h and 45min.

What time are sunrise and sunset in December in Brush Prairie?

In December, on the first day of the month, sunrise is at 7:31 am and sunset at 4:27 pm. On the last day of the month, in Brush Prairie, sunrise is at 7:50 am and sunset at 4:36 pm PST.

How long on average sun shines in December in Brush Prairie?

In Brush Prairie, Washington, the average sunshine duration in December is 3.9h.

When is the lowest UV index in Brush Prairie?

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

What is the UV index intensity in December in Brush Prairie?

In December, the average daily maximum UV index in Brush Prairie, Washington, is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Brush Prairie, WA

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

The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (42.6°F).

  • Average low temperature in December: 32.7°F

The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).

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Average pressure in December
Brush Prairie, WA

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in December
Brush Prairie, WA

Average wind speed in December - Brush Prairie, 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 (3.8mph).

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Average humidity in December
Brush Prairie, WA

Average humidity in December - Brush Prairie, WA
  • Average humidity in December: 85%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (67%).

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Average rainfall in December
Brush Prairie, WA

Average rainfall in December - Brush Prairie, WA
  • Average rainfall in December: 5.94"

The wettest month (with the highest rainfall) is January (6.06").
The driest month (with the least rainfall) is July (0.35").

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Average rainfall days in December
Brush Prairie, WA

Average rainfall days in December - Brush Prairie, WA
  • Average rainfall days in December: 19 days

The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (5.1 days).

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Average snowfall in December
Brush Prairie, WA

Average snowfall in December - Brush Prairie, WA
  • Average snowfall in December: 0.63"

The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Brush Prairie, WA

Average snowfall days in December - Brush Prairie, WA
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is February (3.7 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
Brush Prairie, WA

Average daylight in December / Average sunshine in December - Brush Prairie, 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 5min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 3h and 48min).

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Average sunshine days in December
Brush Prairie, WA

Average sunshine days in December - Brush Prairie, WA
  • Average sunshine days in December: 10.1 days

The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is February (8.2 days).

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Average UV index in December
Brush Prairie, WA

Average UV index in December - Brush Prairie, WA
  • Average UV index in December: 2

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 2).

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Average cloud cover in December
Brush Prairie, WA

Average cloud cover in December - Brush Prairie, WA
  • Average cloud cover in December: 59

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in December
Brush Prairie, WA

Average visibility in December - Brush Prairie, WA
  • Average visibility in December: 5mi

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

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Brush Prairie, Washington, USA

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