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
December, characterized by an average high temperature of 44.2°F (6.8°C) and a low temperature of 34.7°F (1.5°C), is generally the coldest month.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 84%.Rainfall
December is the month with the most rainfall in Cedar Hills. Rain falls for 18.7 days and accumulates 4.61" (117mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Cedar Hills. In Cedar Hills, Oregon, in December, during 0.8 snowfall days, 0.43" (11mm) of snow is typically accumulated. In Cedar Hills, during the entire year, snow falls for 6.1 days and aggregates up to 4.37" (111mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Cedar Hills.On the first day of December in Cedar Hills, sunrise is at 7:31 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 4:38 pm PST.
Sunshine
The average sunshine in December in Cedar Hills is 4.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Cedar Hills, Oregon. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
What time of the year is the coldest in Cedar Hills?
Is it cold in Cedar Hills during December?
What are the most humid months in Cedar Hills?
What is the average humidity in December in Cedar Hills?
What is the wettest month in Cedar Hills?
How many days does it rain in December in Cedar Hills?
How much does it snow in Cedar Hills in December?
What is the month with the shortest days in Cedar Hills?
How many hours of daylight does Cedar Hills have in December?
When are sunrise and sunset in December in Cedar Hills?
How long on average sun shines in December in Cedar Hills?
What is the month with the lowest UV index in Cedar Hills?
How high is the UV index in December in Cedar Hills?
Average temperature in December
Cedar Hills, OR
- Average high temperature in December: 44.2°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 (44.2°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is August (55.6°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in December
Cedar Hills, 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).
Average wind speed in December
Cedar Hills, OR
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is January (5.4mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Cedar Hills, OR
- Average humidity in December: 84%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall in December
Cedar Hills, OR
- Average rainfall in December: 4.61"
The wettest month (with the highest rainfall) is December (4.61").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in December
Cedar Hills, OR
- Average rainfall days in December: 18.7 days
The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (4.6 days).
Average snowfall in December
Cedar Hills, OR
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Cedar Hills, OR
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (2.2 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
Cedar Hills, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in December
Cedar Hills, OR
- Average sunshine days in December: 10.3 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (8.6 days).
Average UV index in December
Cedar Hills, 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).
Average cloud cover in December
Cedar Hills, OR
- Average cloud cover in December: 58
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Cedar Hills, 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).
Cedar Hills, Oregon, USA
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