December weather forecastOtis, OR
December
Weather in December
December, the first month of the winter in Otis, is also a frosty month, with temperature in the range of an average high of 43.5°F (6.4°C) and an average low of 33.3°F (0.7°C).Temperature
With average high temperatures of 43.5°F (6.4°C) and lows of 33.3°F (0.7°C), December is the coldest month.Humidity
February and December, with an average relative humidity of 89%, are the most humid months.Rainfall
December is the month with the most rainfall. Rain falls for 17.1 days and accumulates 2.56" (65mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Otis, in December, snow falls for 0.8 days, with typically accumulated 0.16" (4mm) of snow. Throughout the year, there are 5.8 snowfall days, and 1.77" (45mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 7:34 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:44 pm PST.
Sunshine
The average sunshine in December is 3.6h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Otis, OR
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in December: 33.3°F
The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).
Average pressure in December
Otis, OR
- Average pressure in December: 30.09"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
Otis, OR
- Average wind speed in December: 4.5mph
The windiest month (with the highest average wind speed) is March (5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in December
Otis, OR
- Average humidity in December: 89%
The months with the highest relative humidity are February and December (89%).
The month with the lowest relative humidity is August (71%).
Average rainfall in December
Otis, OR
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is December (2.56").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in December
Otis, OR
- Average rainfall days in December: 17.1 days
The month with the highest number of rainy days is March (18.9 days).
The month with the least rainy days is August (4.8 days).
Average snowfall in December
Otis, OR
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Otis, OR
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (2.3 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
Otis, OR
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in December
Otis, OR
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in December
Otis, OR
- 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
Otis, OR
- Average cloud cover in December: 65
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Otis, OR
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (4mi).
