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
In Jacksonville, the lowest temperatures are generally noted in December, averaging a high of 44.4°F (6.9°C) and a low of 29.3°F (-1.5°C).Humidity
The months with the highest humidity in Jacksonville are January and December, with an average relative humidity of 83%.Rainfall
The month with the most rainfall in Jacksonville, Oregon, is December, when the rain falls for 14.4 days and typically aggregates up to 3.11" (79mm) of precipitation.Snowfall
Months with snowfall in Jacksonville, Oregon, are January through April, November and December. In December, in Jacksonville, it is snowing for 2.7 days. Throughout December, 1.3" (33mm) of snow is accumulated. In Jacksonville, Oregon, during the entire year, snow falls for 14.2 days and aggregates up to 8.15" (207mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:22 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:40 am and sunset at 4:49 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 5.3h of sunshine.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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
What part of the year is the coldest in Jacksonville?
Is December cold in Jacksonville?
What are the most humid months in Jacksonville?
What is the average humidity in December in Jacksonville?
What is the wettest month in Jacksonville?
How much does it rain in Jacksonville in December?
How much does it snow in Jacksonville in December?
What is the month with the shortest days in Jacksonville?
How many hours of daylight does Jacksonville have in December?
When is the sunrise / sunset in December in Jacksonville?
What is the month with the least sunshine in Jacksonville?
How long on average sun shines in December in Jacksonville?
When is the lowest UV index in Jacksonville?
What is the UV index intensity in December in Jacksonville?
Average temperature in December
Jacksonville, OR
- Average high temperature in December: 44.4°F
The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (29.3°F).
Average pressure in December
Jacksonville, OR
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in December
Jacksonville, OR
- Average wind speed in December: 3.9mph
The windiest months (with the highest average wind speed) are January and March (4.2mph).
The calmest months (with the lowest average wind speed) are August, September and October (3.4mph).
Average humidity in December
Jacksonville, OR
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
Jacksonville, OR
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Jacksonville, OR
- Average rainfall days in December: 14.4 days
The month with the highest number of rainy days is March (17.8 days).
The month with the least rainy days is August (3.7 days).
Average snowfall in December
Jacksonville, OR
- Average snowfall in December: 1.3"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Jacksonville, OR
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Jacksonville, OR
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Jacksonville, OR
- Average sunshine days in December: 14 days
The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is March (11.2 days).
Average UV index in December
Jacksonville, 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, November and December (UV index 2).
Average cloud cover in December
Jacksonville, OR
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in December
Jacksonville, OR
- Average visibility in December: 5mi
The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).
Jacksonville, Oregon, USA
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