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
Coos Bay's December weather, marked by an average high temperature of 49.1°F (9.5°C) and an average low temperature of 41.7°F (5.4°C), is the coldest in the year.Humidity
The average relative humidity in December is 82%.Rainfall
December is the month with the most rainfall. Rain falls for 18.6 days and accumulates 5.87" (149mm) of precipitation.Snowfall
In Coos Bay, snow does not fall in March through October and December.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:30 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 4:51 pm PST.
Sunshine
In December, the average sunshine is 4.5h.UV index
The months with the lowest UV index are February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What is the usual temperature for Coos Bay in December?
What is the average humidity in December?
What is the rainiest month?
How much does it rain in December?
When it does not snow?
Does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Coos Bay have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Coos Bay, OR
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is August (66.9°F).
The month with the lowest average high temperature is December (49.1°F).
- Average low temperature in December: 41.7°F
The month with the highest average low temperature is August (52.3°F).
The coldest months (with the lowest average low temperature) are February and December (41.7°F).
Average pressure in December
Coos Bay, OR
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in December
Coos Bay, OR
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in December
Coos Bay, OR
- Average humidity in December: 82%
The months with the highest relative humidity are February and August (84%).
The months with the lowest relative humidity are April and October (81%).
Average rainfall in December
Coos Bay, OR
- Average rainfall in December: 5.87"
The wettest month (with the highest rainfall) is December (5.87").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Coos Bay, OR
- Average rainfall days in December: 18.6 days
The month with the highest number of rainy days is March (19.2 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in December
Coos Bay, OR
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Coos Bay, OR
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.3 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
Coos Bay, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 4h and 24min).
Average sunshine days in December
Coos Bay, OR
- Average sunshine days in December: 10.8 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (9.7 days).
Average UV index in December
Coos Bay, 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 and December (UV index 2).
Average cloud cover in December
Coos Bay, OR
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and September (Cloud cover 28).
Average visibility in December
Coos Bay, OR
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Coos Bay, Oregon, USA
Weather forecast for your location
2. Allow the app to use your location