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
The coldest time of the year is December, with temperatures averaging a high of 46°F (7.8°C) and a low of 33.1°F (0.6°C).Humidity
The months with the highest humidity in Yoncalla are January, February and December, with an average relative humidity of 87%.Rainfall
The month with the most rainfall is December, when the rain falls for 17.9 days and typically aggregates up to 4.17" (106mm) of precipitation.Snowfall
Months with snowfall in Yoncalla are January through April, November and December. In December, in Yoncalla, Oregon, it is snowing for 0.9 days. Throughout December, 0.43" (11mm) of snow is accumulated. In Yoncalla, during the entire year, snow falls for 5.2 days and aggregates up to 4.09" (104mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:27 am and sunset at 4:37 pm. On the last day of December, in Yoncalla, sunrise is at 7:46 am and sunset at 4:46 pm PST.
Sunshine
In December, the average sunshine is 4.3h.UV index
The months with the lowest UV index in Yoncalla are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What is the coldest month in Yoncalla?
What is the average December temperature in Yoncalla?
What is the most humid month in Yoncalla?
What is the average humidity in December in Yoncalla?
What is the rainiest month in Yoncalla?
How much does it rain in Yoncalla in December?
How much does it snow in Yoncalla in December?
What is the month with the shortest days in Yoncalla?
What is the average length of the day in December in Yoncalla?
When is the sunrise / sunset in December in Yoncalla?
How many hours of sunshine does Yoncalla have in December?
What are the months with the lowest UV index in Yoncalla?
What is the UV index intensity in December in Yoncalla?
Average temperature in December
Yoncalla, OR
- Average high temperature in December: 46°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure in December
Yoncalla, OR
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Yoncalla, OR
- Average wind speed in December: 3.9mph
The windiest months (with the highest average wind speed) are January and March (4mph).
The calmest month (with the lowest average wind speed) is September (3.2mph).
Average humidity in December
Yoncalla, OR
- Average humidity in December: 87%
The months with the highest relative humidity are January, February and December (87%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in December
Yoncalla, OR
- Average rainfall in December: 4.17"
The wettest month (with the highest rainfall) is December (4.17").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Yoncalla, OR
- Average rainfall days in December: 17.9 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in December
Yoncalla, OR
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Yoncalla, OR
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is February (2 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
Yoncalla, 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 2min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Yoncalla, OR
- Average sunshine days in December: 11.6 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is February (9.7 days).
Average UV index in December
Yoncalla, OR
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Yoncalla, OR
- Average cloud cover in December: 57
The month with the most cloud cover is March (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Yoncalla, OR
- Average visibility in December: 4mi
The months with the highest visibility are July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (4mi).
Yoncalla, Oregon, USA
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