December weather forecast
Sitkum, OR

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Weather in December

The first month of the winter, December, is still a chilly month in Sitkum, Oregon, with an average temperature varying between 37.8°F (3.2°C) and 49.1°F (9.5°C).

Temperature

December is the month when Sitkum sees the lowest average temperatures, with a high of 49.1°F (9.5°C) and a low of 37.8°F (3.2°C).

Humidity

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

Rainfall

December is the month with the most rainfall. Rain falls for 18 days and accumulates 5.12" (130mm) of precipitation.

Snowfall

In Sitkum, snow does not fall in April through October and December.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:28 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:47 am and sunset at 4:50 pm PST.

Sunshine

The months with the least sunshine are January, February and December, with an average of 4.6h of sunshine.

UV index

The months with the lowest UV index are February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 2 during December leads to these instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

What is the coldest time of year?

December proves to be the coldest month, recording an average maximum temperature of 49.1°F (9.5°C) and a minimum temperature of 37.8°F (3.2°C).

What is the average December temperature?

The average high-temperature and low-temperature during December are 49.1°F (9.5°C) and 37.8°F (3.2°C) respectively.

What is the average humidity in December?

In December, the average relative humidity is 85%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 18 days and typically aggregates up to 5.12" (130mm) of precipitation.

How many days does it rain in December?

In December, the rain falls for 18 days. Throughout December, 5.12" (130mm) of precipitation is accumulated.

When it does not snow in Sitkum?

In Sitkum, snow does not fall in April through October and December.

Does it snow in December?

In December, it doesn't snow. November is the latest month when it typically snows.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 6min of daylight.

What is the average length of the day in December?

In December, the average day length in Sitkum is 9h and 3min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:28 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:50 pm PST.

What is the month with the least sunshine?

The months with the least sunshine are January, February and December, with an average of 4.6h of sunshine.

How many hours of sunshine does Sitkum have in December?

In December, the average sunshine duration is 4.6h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Sitkum, OR

Average temperature in December - Sitkum, OR
  • Average high temperature in December: 49.1°F

The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is December (49.1°F).

  • Average low temperature in December: 37.8°F

The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is February (37.4°F).

Average pressure in December
Sitkum, OR

Average pressure in December - Sitkum, OR
  • Average pressure in December: 30.09"Hg

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

Average wind speed in December
Sitkum, OR

Average wind speed in December - Sitkum, OR
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is March (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in December
Sitkum, OR

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

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are July, August and September (78%).

Average rainfall in December
Sitkum, OR

Average rainfall in December - Sitkum, OR
  • Average rainfall in December: 5.12"

The wettest month (with the highest rainfall) is December (5.12").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in December
Sitkum, OR

Average rainfall days in December - Sitkum, OR
  • Average rainfall days in December: 18 days

The month with the highest number of rainy days is March (19.1 days).
The month with the least rainy days is August (3.3 days).

Average snowfall in December
Sitkum, OR

Average snowfall in December - Sitkum, OR
  • Average snowfall in December: 0"

The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").

Average snowfall days in December
Sitkum, OR

Average snowfall days in December - Sitkum, OR
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).

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

Average daylight in December / Average sunshine in December - Sitkum, OR
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 36min).

Average sunshine days in December
Sitkum, OR

Average sunshine days in December - Sitkum, OR
  • Average sunshine days in December: 12.5 days

The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is February (10.5 days).

Average UV index in December
Sitkum, OR

Average UV index in December - Sitkum, OR
  • 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 February, November and December (UV index 2).

Average cloud cover in December
Sitkum, OR

Average cloud cover in December - Sitkum, OR
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 31).

Average visibility in December
Sitkum, OR

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

The months with the highest visibility are January, February, March, April, May, October, November and December (5mi).
The months with the lowest visibility are June, July, August and September (4mi).

Sitkum, Oregon, USA

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