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
Cottage Grove's December weather, with an average high temperature of 45.9°F (7.7°C) and an average low temperature of 33.4°F (0.8°C), tends to be the coldest of the year.Humidity
In Cottage Grove, the average relative humidity in December is 86%.Rainfall
The month with the most rainfall is December, when the rain falls for 18.2 days and typically aggregates up to 4.61" (117mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In December, it is snowing for 0.8 days. Throughout December, 0.39" (10mm) of snow is accumulated. Throughout the year, there are 7.1 snowfall days, and 6.22" (158mm) of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:27 am and sunset at 4:36 pm. On the last day of December, sunrise is at 7:46 am and sunset at 4:45 pm PST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.2h of sunshine.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 reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
What are December temperatures?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Cottage Grove have in December?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Cottage Grove, OR
- Average high temperature in December: 45.9°F
The warmest month (with the highest average high temperature) is August (80.1°F).
The month with the lowest average high temperature is December (45.9°F).
- Average low temperature in December: 33.4°F
The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is December (33.4°F).
Average pressure in December
Cottage Grove, OR
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Cottage Grove, OR
- Average wind speed in December: 4.3mph
The windiest month (with the highest average wind speed) is January (4.5mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in December
Cottage Grove, OR
- Average humidity in December: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in December
Cottage Grove, 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 (0.2").
Average rainfall days in December
Cottage Grove, OR
- Average rainfall days in December: 18.2 days
The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (3.6 days).
Average snowfall in December
Cottage Grove, OR
- Average snowfall in December: 0.39"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Cottage Grove, OR
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (2.8 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
Cottage Grove, OR
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 4h and 12min).
Average sunshine days in December
Cottage Grove, OR
- Average sunshine days in December: 11.3 days
The month with the most sunshine days is July (25.8 days).
The months with the least sunshine days are February and March (9.3 days).
Average UV index in December
Cottage Grove, OR
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Cottage Grove, OR
- Average cloud cover in December: 57
The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Cottage Grove, OR
- Average visibility in December: 4mi
The months with the highest visibility are July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (4mi).
Cottage Grove, Oregon, USA
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