December weather forecast and climate
Wilbur, WA

Weather in December

December, the first month of the winter, in Wilbur, is still a freezing cold month, with average temperature fluctuating between 31.6°F (-0.2°C) and 21.4°F (-5.9°C).

Temperature

The coldest month is December, with an average high-temperature of 31.6°F (-0.2°C) and an average low-temperature of 21.4°F (-5.9°C).

Humidity

In December, the average relative humidity in Wilbur is 86%.

Rainfall

The wettest months are May and December, with an average 1.18" (30mm) of rainfall.

Snowfall

Months with snowfall are January through April, September through December. In Wilbur, Washington, in December, during 10.5 snowfall days, 3.78" (96mm) of snow is typically accumulated. Throughout the year, there are 33.4 snowfall days, and 14.65" (372mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Wilbur, Washington, with an average of 8.5h of daylight.

Sunshine

In December, the average sunshine is 4.4h.

UV index

In Wilbur, Washington, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 transform into the following instructions:
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. 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 Wilbur?

With an average high-temperature of 31.6°F (-0.2°C) and an average low-temperature of 21.4°F (-5.9°C), December is the coldest month in Wilbur.

What is the average humidity in December in Wilbur?

In December, the average relative humidity in Wilbur is 86%.

What is the rainiest month in Wilbur?

Months with the most rainfall in Wilbur are May and December, with an average 1.18" (30mm) of precipitation.

How much does it rain in Wilbur in December?

In December, in Wilbur, Washington, the rain falls for 8.5 days. Throughout December, 1.18" (30mm) of precipitation is accumulated.

How many days does it snow in December in Wilbur?

In Wilbur, during December, snow falls for 10.5 days and regularly aggregates up to 3.78" (96mm) of snow.

What is the month with the shortest days in Wilbur?

With an average of 8.5h of daylight, December has the shortest days of the year in Wilbur.

How many hours of daylight does Wilbur have in December?

The average length of the day in December in Wilbur, Washington, is 8.5h.

How many hours of sunshine does Wilbur have in December?

In December, the average sunshine in Wilbur, Washington, is 4.4h.

What is the UV index reading in December in Wilbur?

In Wilbur, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.

Average temperature in December
Wilbur, WA

Average temperature in December - Wilbur, WA
  • Average high temperature in December: 31.6°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (31.6°F).

  • Average low temperature in December: 21.4°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).

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Average pressure in December
Wilbur, WA

Average pressure in December - Wilbur, WA
  • Average pressure in December: 30.15"

The month with the highest atmospheric pressure is January (30.18").
The month with the lowest atmospheric pressure is August (29.91").

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Average wind speed in December
Wilbur, WA

Average wind speed in December - Wilbur, WA
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).

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Average humidity in December
Wilbur, WA

Average humidity in December - Wilbur, WA
  • Average humidity in December: 86%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (36%).

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Average rainfall in December
Wilbur, WA

Average rainfall in December - Wilbur, WA
  • Average rainfall in December: 1.18"

The wettest months (with the highest rainfall) are May and December (1.18").
The driest months (with the least rainfall) are July and August (0.2").

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Average rainfall days in December
Wilbur, WA

Average rainfall days in December - Wilbur, WA
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.2 days).

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Average snowfall in December
Wilbur, WA

Average snowfall in December - Wilbur, WA
  • Average snowfall in December: 3.78"

The month with the highest snowfall is January (4.41").
Months with the least snowfall are May, June, July and August (0").

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Average snowfall days in December
Wilbur, WA

Average snowfall days in December - Wilbur, WA
  • Average snowfall days in December: 10.5 days

The month with the highest number of snowfall days is December (10.5 days).
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
Wilbur, WA

Average daylight in December / Average sunshine in December - Wilbur, WA
  • Average daylight in December: 8.5h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in December: 4.4h

The month with the most sunshine is August (Average sunshine: 12.1h).
The month with the least sunshine is January (Average sunshine: 4.1h).

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Average sunshine days in December
Wilbur, WA

Average sunshine days in December - Wilbur, WA
  • Average sunshine days in December: 16 days

The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is March (14.7 days).

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Average UV index in December
Wilbur, WA

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).

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Average cloud cover in December
Wilbur, WA

Average cloud cover in December - Wilbur, WA
  • Average cloud cover in December: 52

The month with the most cloud cover is January (Cloud cover 55).
Months with the least cloud cover are July and August (Cloud cover 12).

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Average visibility in December
Wilbur, WA

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

Months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January and December (4mi).

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