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
The coldest period tends to be December, when average temperatures fluctuate between a high of 42.8°F (6°C) and a low of 35.2°F (1.8°C).Humidity
The most humid month is December, with an average relative humidity of 87%.Rainfall
In Brinnon, during December, the rain falls for 18.8 days and regularly aggregates up to 3.94" (100mm) of precipitation. In Brinnon, during the entire year, the rain falls for 180.4 days and collects up to 26.93" (684mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Brinnon. In Brinnon, during December, snow falls for 1.1 days and regularly aggregates up to 0.28" (7mm) of snow. Throughout the year, there are 8.1 snowfall days, and 4.69" (119mm) of snow is accumulated.Daylight
With an average of 8h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:40 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:59 am and sunset at 4:29 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 4.6h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Brinnon. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What time of the year is the coldest in Brinnon?
Is December cold in Brinnon?
What is the most humid month in Brinnon?
What is the average humidity in December in Brinnon?
How many days does it rain in December in Brinnon?
How much does it snow in Brinnon in December?
What is the month with the shortest days in Brinnon?
What is the average length of the day in December in Brinnon?
When are sunrise and sunset in December in Brinnon?
What are the months with the least sunshine in Brinnon?
How many hours of sunshine does Brinnon have in December?
When is the lowest UV index in Brinnon?
How high is the UV index in December in Brinnon?
Average temperature in December
Brinnon, WA
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is August (75.7°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in December: 35.2°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (35.2°F).
Average pressure in December
Brinnon, WA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March and September (30.01"Hg).
Average wind speed in December
Brinnon, WA
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.2mph).
Average humidity in December
Brinnon, WA
- Average humidity in December: 87%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Brinnon, WA
- Average rainfall in December: 3.94"
The wettest month (with the highest rainfall) is January (4.33").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in December
Brinnon, WA
- Average rainfall days in December: 18.8 days
The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in December
Brinnon, WA
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Brinnon, WA
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is February (3.1 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
Brinnon, WA
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).
Average sunshine days in December
Brinnon, WA
- Average sunshine days in December: 10 days
The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is February (8.7 days).
Average UV index in December
Brinnon, WA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Brinnon, WA
- Average cloud cover in December: 53
The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Brinnon, WA
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
Brinnon, Washington, USA
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