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 month when Cottage Grove experiences its coldest temperatures, averaging a high of 45.9°F (7.7°C) and a low of 33.4°F (0.8°C).Humidity
The average relative humidity in December is 86%.Rainfall
December is the month with the most rainfall. Rain falls for 18.2 days and accumulates 4.61" (117mm) of precipitation.Snowfall
Months with snowfall in Cottage Grove are January through April, November and December. In December, in Cottage Grove, it is snowing for 0.8 days. Throughout December, 0.39" (10mm) of snow is accumulated. In Cottage Grove, during the entire year, snow falls for 7.1 days and aggregates up to 6.22" (158mm) of snow.Daylight
December has the shortest days of the year in Cottage Grove, with an average of 9h and 0min of daylight.On the first day of December in Cottage Grove, sunrise is at 7:27 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:45 pm PST.
Sunshine
February and December, with an average of 4.2h of sunshine, are months with the least 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 minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What part of the year is the coldest in Cottage Grove?
What is the temperature in December in Cottage Grove?
What is the average humidity in December in Cottage Grove?
What is the rainiest month in Cottage Grove?
How much does it rain in Cottage Grove in December?
How much does it snow in Cottage Grove in December?
What is the month with the shortest days in Cottage Grove?
What is the average length of the day in December in Cottage Grove?
What time are sunrise and sunset in December in Cottage Grove?
What is the month with the least sunshine in Cottage Grove?
How long on average sun shines in December in Cottage Grove?
What is the month with the lowest UV index in Cottage Grove?
What is the UV index intensity in December in Cottage Grove?
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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