December weather forecast
Elk Plain, WA

Weather in December

December, the first month of the winter, in Elk Plain, is still a chilly month, with average temperature ranging between max 42.8°F (6°C) and min 32.9°F (0.5°C).

Temperature

With an average high-temperature of 42.8°F (6°C) and an average low-temperature of 32.9°F (0.5°C), December is the coldest month.

Humidity

Months with the highest humidity are January and December, with an average relative humidity of 87%.

Rainfall

The month with the most rainfall in Elk Plain is December when the rain falls for 18.4 days and typically aggregates up to 4.92" (125mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Elk Plain, snow falls for 1.4 days, with typically accumulated 0.31" (8mm) of snow. Throughout the year, there are 10.3 snowfall days, and 5.94" (151mm) of snow is accumulated.

Daylight

With an average of 8.6h of daylight, December has the shortest days of the year in Elk Plain.

Sunshine

With an average of 4.1h of sunshine, December has the least sunshine of the year.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Elk Plain. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation for the average person.
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 Elk Plain?

December is the coldest month in Elk Plain, Washington, with an average high-temperature of 42.8°F (6°C) and an average low-temperature of 32.9°F (0.5°C).

What is the most humid month in Elk Plain?

January and December, with an average relative humidity of 87%, are most humid months.

What is the average humidity in December in Elk Plain?

In Elk Plain, the average relative humidity in December is 87%.

What is the rainiest month in Elk Plain?

The month with the most rainfall in Elk Plain is December when the rain falls for 18.4 days and typically aggregates up to 4.92" (125mm) of precipitation.

How many days does it rain in December in Elk Plain?

In Elk Plain, during December, the rain falls for 18.4 days and regularly aggregates up to 4.92" (125mm) of precipitation.

How many days does it snow in December in Elk Plain?

In Elk Plain, during December, snow falls for 1.4 days and regularly aggregates up to 0.31" (8mm) of snow.

What is the month with the shortest days in Elk Plain?

The month with the shortest days in Elk Plain, Washington, is December, with an average of 8.6h of daylight.

How many hours of daylight does Elk Plain have in December?

In December, the average length of the day in Elk Plain, Washington, is 8.6h.

What is the month with the least sunshine in Elk Plain?

With an average of 4.1h of sunshine, December has the least sunshine of the year in Elk Plain, Washington.

How many hours of sunshine does Elk Plain have in December?

The average sunshine in December in Elk Plain, Washington, is 4.1h.

When is the lowest UV index in Elk Plain?

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

What is the UV index reading in December in Elk Plain?

The average daily maximum UV index in December in Elk Plain, Washington, is 2. A UV Index value of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV rays.

Average temperature in December
Elk Plain, WA

Average temperature in December - Elk Plain, WA
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (42.8°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is August (51.3°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).

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Average pressure in December
Elk Plain, WA

Average pressure in December - Elk Plain, WA
  • Average pressure in December: 30.09"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are March, August and September (30.01").

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Average wind speed in December
Elk Plain, WA

Average wind speed in December - Elk Plain, WA
  • Average wind speed in December: 4.5mph

The windiest months (with the highest average wind speed) are January and March (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in December
Elk Plain, WA

Average humidity in December - Elk Plain, WA
  • Average humidity in December: 87%

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

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Average rainfall in December
Elk Plain, WA

Average rainfall in December - Elk Plain, WA
  • Average rainfall in December: 4.92"

The wettest month (with the highest rainfall) is December (4.92").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in December
Elk Plain, WA

Average rainfall days in December - Elk Plain, WA
  • Average rainfall days in December: 18.4 days

The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (4.8 days).

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Average snowfall in December
Elk Plain, WA

Average snowfall in December - Elk Plain, WA
  • Average snowfall in December: 0.31"

The month with the highest snowfall is February (2.44").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Elk Plain, WA

Average snowfall days in December - Elk Plain, WA
  • Average snowfall days in December: 1.4 days

The month with the highest number of snowfall days is February (4.1 days).
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
Elk Plain, WA

Average daylight in December / Average sunshine in December - Elk Plain, WA
  • Average daylight in December: 8.6h

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.6h).

  • Average sunshine in December: 4.1h

The month with the most sunshine is August (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 4.1h).

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Average sunshine days in December
Elk Plain, WA

Average sunshine days in December - Elk Plain, WA
  • Average sunshine days in December: 11.1 days

The month with the most sunshine days is August (23.8 days).
The month with the least sunshine days is November (9.3 days).

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Average UV index in December
Elk Plain, WA

Average UV index in December - Elk Plain, WA
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 5).
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
Elk Plain, WA

Average cloud cover in December - Elk Plain, WA
  • Average cloud cover in December: 58

The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Elk Plain, WA

Average visibility in December - Elk Plain, WA
  • Average visibility in December: 5mi

Months with the highest visibility are July and August (6mi).
Months with the lowest visibility are January and February (4mi).

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