December weather forecast
Woodburn, OR

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Weather in December

December, Woodburn, Oregon's coldest month, displays its winter glory. Woodburn's residents find the festive season counterbalancing the declining temperature perfectly. The snowfall of 0.35" (9mm) adds to the winter celebrations. Winter sports enthusiasts find reasons to rejoice, adding warmth to the chilled ambiance. As the year concludes with December, the weather cycle repeats itself, harking back to the chills of January.

Temperature

The month of December sees the lowest average temperatures, reaching 44.4°F (6.9°C) at the peak and 34.5°F (1.4°C) at the low.

Humidity

In December, the average relative humidity in Woodburn, Oregon, is 85%.

Rainfall

The month with the most rainfall in Woodburn, Oregon, is December, when the rain falls for 18.9 days and typically aggregates up to 4.21" (107mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Woodburn, in December, snow falls for 0.9 days, with typically accumulated 0.35" (9mm) of snow. Throughout the year, in Woodburn, Oregon, there are 6.2 snowfall days, and 3.19" (81mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 48min of daylight.
On the first day of December, sunrise is at 7:30 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:39 pm PST.

Sunshine

The average sunshine in December is 4.3h.

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 of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Enhance your sun protection with tightly woven, yet airy clothing. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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Frequently asked questions

What is the coldest month in Woodburn?

December tends to be the coldest month in Woodburn, Oregon, with temperatures averaging a daily high of 44.4°F (6.9°C) and a low of 34.5°F (1.4°C).

How cold does it get in Woodburn in December?

In December, in Woodburn, the average high-temperature is 44.4°F (6.9°C), and the average low-temperature is 34.5°F (1.4°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is estimated at 84.2°F (29°C).

What is the average humidity in December in Woodburn?

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

What is the rainiest month in Woodburn?

December is the month with the most rainfall in Woodburn, Oregon. Rain falls for 18.9 days and accumulates 4.21" (107mm) of precipitation.

How much does it rain in Woodburn in December?

In Woodburn, Oregon, in December, it is raining for 18.9 days, with typically 4.21" (107mm) of accumulated precipitation.

How many days does it snow in December in Woodburn?

In Woodburn, during December, snow falls for 0.9 days and regularly aggregates up to 0.35" (9mm) of snow.

What is the month with the shortest days in Woodburn?

With an average of 8h and 48min of daylight, December has the shortest days of the year in Woodburn.

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

In December, the average day length in Woodburn is 8h and 49min.

What time are sunrise and sunset in December in Woodburn?

In December, on the first day of the month, sunrise is at 7:30 am and sunset at 4:30 pm. On the last day of the month, in Woodburn, Oregon, sunrise is at 7:50 am and sunset at 4:39 pm PST.

How many hours of sunshine does Woodburn have in December?

The average sunshine duration in December in Woodburn, Oregon, is 4.3h.

When is the lowest UV index in Woodburn?

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

What is the UV index intensity in December in Woodburn?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
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
Woodburn, OR

Average temperature in December - Woodburn, OR
  • Average high temperature in December: 44.4°F

The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (44.4°F).

  • Average low temperature in December: 34.5°F

The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).

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Average pressure in December
Woodburn, OR

Average pressure in December - Woodburn, OR
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed in December
Woodburn, OR

Average wind speed in December - Woodburn, OR
  • Average wind speed in December: 5.2mph

The windiest months (with the highest average wind speed) are January and March (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

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Average humidity in December
Woodburn, OR

Average humidity in December - Woodburn, OR
  • Average humidity in December: 85%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in December
Woodburn, OR

Average rainfall in December - Woodburn, OR
  • Average rainfall in December: 4.21"

The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is July (0.28").

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Average rainfall days in December
Woodburn, OR

Average rainfall days in December - Woodburn, OR
  • Average rainfall days in December: 18.9 days

The month with the highest number of rainy days is March (19.9 days).
The months with the least rainy days are July and August (4.3 days).

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Average snowfall in December
Woodburn, OR

Average snowfall in December - Woodburn, OR
  • Average snowfall in December: 0.35"

The month with the highest snowfall is February (1.3").
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
Woodburn, OR

Average snowfall days in December - Woodburn, OR
  • Average snowfall days in December: 0.9 days

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Woodburn, OR

Average daylight in December / Average sunshine in December - Woodburn, OR
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

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Average sunshine days in December
Woodburn, OR

Average sunshine days in December - Woodburn, OR
  • Average sunshine days in December: 10.7 days

The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (8.4 days).

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Average UV index in December
Woodburn, OR

Average UV index in December - Woodburn, OR
  • 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
Woodburn, OR

Average cloud cover in December - Woodburn, OR
  • Average cloud cover in December: 55

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in December
Woodburn, OR

Average visibility in December - Woodburn, OR
  • Average visibility in December: 5mi

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

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Woodburn, Oregon, USA

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