December weather forecastColumbia City, OR
December
Weather in December
December, the first month of the winter in Columbia City, is still a cold month, with an average temperature varying between 42.6°F (5.9°C) and 32.9°F (0.5°C).Temperature
Columbia City's December weather reaches an average high of 42.6°F (5.9°C) and an average low of 32.9°F (0.5°C), making it the coldest month.Humidity
In Columbia City, Oregon, the average relative humidity in December is 86%.Rainfall
In Columbia City, during December, the rain falls for 19.5 days and regularly aggregates up to 5.24" (133mm) of precipitation. Throughout the year, there are 180.2 rainfall days, and 36.77" (934mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Columbia City, during December, snow falls for 0.8 days and regularly aggregates up to 0.31" (8mm) of snow. In Columbia City, 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.On the first day of December, 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
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. It's recommended to limit sun exposure when its radiation is at its peak during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 42min
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 48min
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).
