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
In Siletz, December is the coldest month, with temperatures averaging a high of 47.7°F (8.7°C) and a low of 40.6°F (4.8°C).Humidity
February, March, November and December, with an average relative humidity of 83%, are the most humid months.Rainfall
December is the month with the most rainfall in Siletz. Rain falls for 16.5 days and accumulates 3.07" (78mm) of precipitation.Snowfall
In Siletz, snow does not fall in March through October and December.Daylight
With an average of 8h and 54min 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 4:36 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 4:45 pm PST.
Sunshine
In Siletz, the average sunshine in December is 4.2h.UV index
February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Siletz. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What time of the year is the coldest in Siletz?
What is the average December temperature in Siletz?
What are the most humid months in Siletz?
What is the average humidity in December in Siletz?
What is the rainiest month in Siletz?
How much does it rain in Siletz in December?
When it does not snow in Siletz?
Does it snow in Siletz in December?
What is the month with the shortest days in Siletz?
What is the average length of the day in December in Siletz?
When are sunrise and sunset in December in Siletz?
How long on average sun shines in December in Siletz?
What are the months with the lowest UV index in Siletz?
What is the UV index intensity in December in Siletz?
Average temperature in December
Siletz, OR
- Average high temperature in December: 47.7°F
The warmest month (with the highest average high temperature) is August (67.6°F).
The month with the lowest average high temperature is December (47.7°F).
- Average low temperature in December: 40.6°F
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (40.6°F).
Average pressure in December
Siletz, OR
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is September (30.02"Hg).
Average wind speed in December
Siletz, OR
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Siletz, OR
- Average humidity in December: 83%
The months with the highest relative humidity are February, March, November and December (83%).
The months with the lowest relative humidity are April, May, July, September and October (81%).
Average rainfall in December
Siletz, OR
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is December (3.07").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Siletz, OR
- Average rainfall days in December: 16.5 days
The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is August (3.7 days).
Average snowfall in December
Siletz, OR
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Siletz, OR
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Siletz, OR
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 4h and 0min).
Average sunshine days in December
Siletz, OR
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is March (10.9 days).
Average UV index in December
Siletz, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in December
Siletz, OR
- Average cloud cover in December: 56
The months with the most cloud cover are February and March (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Siletz, OR
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
Siletz, Oregon, USA
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