Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In Clatskanie, the lowest temperatures are generally noted in December, averaging a high of 42.3°F (5.7°C) and a low of 32.9°F (0.5°C).Humidity
February, November and December, with an average relative humidity of 89%, are the most humid months.Rainfall
In Clatskanie, during December, the rain falls for 13.6 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 141.6 rainfall days, and 11.57" (294mm) of precipitation is accumulated.Snowfall
Months with snowfall in Clatskanie are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 4.6 snowfall days, and 1.54" (39mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:35 am and sunset at 4:28 pm. On the last day of December, sunrise is at 7:55 am and sunset at 4:37 pm PST.
Sunshine
The average sunshine in December is 3.3h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is December?
What are the most humid months?
What is the average humidity in December?
How many days does it rain in December?
When does it start snowing?
What is the month with the shortest days?
How many hours of daylight does Clatskanie have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index in Clatskanie?
What is the UV index reading in December?
Average temperature in December
Clatskanie, OR
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in December
Clatskanie, OR
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January and December (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.02"Hg).
Average wind speed in December
Clatskanie, OR
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is January (4.9mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).
Average humidity in December
Clatskanie, OR
- Average humidity in December: 89%
The months with the highest relative humidity are February, November and December (89%).
The month with the lowest relative humidity is July (75%).
Average rainfall in December
Clatskanie, OR
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is January (1.77").
The driest month (with the least rainfall) is August (0.24").
Average rainfall days in December
Clatskanie, OR
- Average rainfall days in December: 13.6 days
The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (4.7 days).
Average snowfall in December
Clatskanie, OR
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Clatskanie, OR
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Clatskanie, OR
- 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in December
Clatskanie, OR
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is August (24.6 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in December
Clatskanie, OR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Clatskanie, OR
- Average cloud cover in December: 66
The months with the most cloud cover are February and March (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in December
Clatskanie, OR
- Average visibility in December: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
Clatskanie, Oregon, USA
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