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
Sunriver witnesses the coldest weather in December, with temperatures averaging a high of 35.8°F (2.1°C) and a low of 24.6°F (-4.1°C).Humidity
With an average relative humidity of 82%, December is the most humid month.Rainfall
In Sunriver, Oregon, in December, it is raining for 7.6 days, with typically 1.18" (30mm) of accumulated precipitation. In Sunriver, during the entire year, the rain falls for 107.1 days and collects up to 12.17" (309mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Sunriver, Oregon. In Sunriver, during December, snow falls for 8.3 days and regularly aggregates up to 3.9" (99mm) of snow. Throughout the year, there are 44.9 snowfall days, and 24.57" (624mm) of snow is accumulated.Daylight
The month with the shortest days in Sunriver is December, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:20 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:38 pm PST.
Sunshine
December has the least sunshine of the year in Sunriver, with an average of 5.4h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sunriver. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What part of the year is the coldest in Sunriver?
How cold is December in Sunriver?
What is the most humid month in Sunriver?
What is the average humidity in December in Sunriver?
How much does it rain in Sunriver in December?
How many days does it snow in December in Sunriver?
What is the month with the shortest days in Sunriver?
How many hours of daylight does Sunriver have in December?
When is the sunrise / sunset in December in Sunriver?
What is the month with the least sunshine in Sunriver?
How long on average sun shines in December in Sunriver?
What is the month with the lowest UV index in Sunriver?
What is the UV index intensity in December in Sunriver?
Average temperature in December
Sunriver, OR
- Average high temperature in December: 35.8°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is December (35.8°F).
- Average low temperature in December: 24.6°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (24.6°F).
Average pressure in December
Sunriver, OR
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in December
Sunriver, OR
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Sunriver, OR
- Average humidity in December: 82%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is July (48%).
Average rainfall in December
Sunriver, OR
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in December
Sunriver, OR
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is July (4.8 days).
Average snowfall in December
Sunriver, OR
- Average snowfall in December: 3.9"
The month with the highest snowfall is February (6.65").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Sunriver, OR
- Average snowfall days in December: 8.3 days
The month with the highest number of snowfall days is March (9.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Sunriver, 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: 5h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Sunriver, OR
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is July (23.6 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in December
Sunriver, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Sunriver, OR
- Average cloud cover in December: 46
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in December
Sunriver, OR
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Sunriver, Oregon, USA
Weather forecast for your location
2. Allow the app to use your location
