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
Union Creek's coldest month, December, generally records average temperatures ranging from a high of 34.9°F (1.6°C) to a low of 22.6°F (-5.2°C).Humidity
In Union Creek, the average relative humidity in December is 86%.Rainfall
In Union Creek, during December, the rain falls for 6.5 days and regularly aggregates up to 5.2" (132mm) of precipitation. In Union Creek, during the entire year, the rain falls for 91.3 days and collects up to 32.95" (837mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. December is the month with the most snowfall. Snow falls for 20.8 days and accumulates 39.72" (1009mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:21 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:45 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 4.4h of sunshine.UV index
In Union Creek, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 in December translates into this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
When does it snow the most?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Union Creek, OR
- Average high temperature in December: 34.9°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is December (34.9°F).
- Average low temperature in December: 22.6°F
The month with the highest average low temperature is August (46.8°F).
The coldest month (with the lowest average low temperature) is December (22.6°F).
Average pressure in December
Union Creek, OR
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in December
Union Creek, OR
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are January, February and March (6mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Union Creek, OR
- Average humidity in December: 86%
The months with the highest relative humidity are January, February and March (87%).
The months with the lowest relative humidity are July and August (57%).
Average rainfall in December
Union Creek, OR
- Average rainfall in December: 5.2"
The wettest month (with the highest rainfall) is January (5.28").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in December
Union Creek, OR
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (13.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Union Creek, OR
- Average snowfall in December: 39.72"
The month with the highest snowfall is December (39.72").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Union Creek, OR
- Average snowfall days in December: 20.8 days
The month with the highest number of snowfall days is March (21.5 days).
The month with the least snowfall days is August (0 days).
Average daylight in December /
Average sunshine in December
Union Creek, OR
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in December
Union Creek, OR
- Average sunshine days in December: 10.7 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in December
Union Creek, OR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Union Creek, OR
- Average cloud cover in December: 57
The month with the most cloud cover is March (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in December
Union Creek, OR
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Union Creek, Oregon, USA
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