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 is the coldest month of the year, registering average temperatures as high as 42.6°F (5.9°C) and as low as 32.9°F (0.5°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In December, the rain falls for 19.5 days. Throughout December, 5.24" (133mm) of precipitation is accumulated. In Columbia City, Oregon, during the entire year, the rain falls for 180.2 days and collects up to 36.77" (934mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Columbia City. In Columbia City, during December, snow falls for 0.8 days and regularly aggregates up to 0.31" (8mm) of snow. In Columbia City, Oregon, during the entire year, snow falls for 7.6 days and aggregates up to 5.79" (147mm) of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Columbia City.On the first day of December in Columbia City, sunrise is at 7:33 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 4:36 pm PST.
Sunshine
In December, the average sunshine is 3.8h.UV index
The months with the lowest UV index in Columbia City 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 unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What are the coldest months in Columbia City?
Is December cold in Columbia City?
What is the average humidity in December in Columbia City?
How many days does it rain in December in Columbia City?
How much does it snow in Columbia City in December?
What is the month with the shortest days in Columbia City?
What is the average length of the day in December in Columbia City?
When are sunrise and sunset in December in Columbia City?
How long on average sun shines in December in Columbia City?
What are the months with the lowest UV index in Columbia City?
What is the UV index reading in December in Columbia City?
Average temperature in December
Columbia City, OR
- Average high temperature in December: 42.6°F
The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in December
Columbia City, 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
Columbia City, 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 (3.9mph).
Average humidity in December
Columbia City, OR
- Average humidity in December: 86%
The months with the highest relative humidity are February and November (87%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in December
Columbia City, OR
- Average rainfall in December: 5.24"
The wettest month (with the highest rainfall) is January (5.43").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in December
Columbia City, OR
- Average rainfall days in December: 19.5 days
The month with the highest number of rainy days is March (21 days).
The month with the least rainy days is July (5.2 days).
Average snowfall in December
Columbia City, OR
- Average snowfall in December: 0.31"
The month with the highest snowfall is January (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Columbia City, OR
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (2.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Columbia City, 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).
Average sunshine days in December
Columbia City, OR
- Average sunshine days in December: 10.4 days
The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in December
Columbia City, 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
Columbia City, OR
- Average cloud cover in December: 61
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Columbia City, OR
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Columbia City, Oregon, USA
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