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 Dallas, December is the coldest month, with temperatures averaging a high of 44.2°F (6.8°C) and a low of 34°F (1.1°C).Humidity
The most humid month is December, with an average relative humidity of 89%.Rainfall
The month with the most rainfall is December, when the rain falls for 15.7 days and typically aggregates up to 2.4" (61mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Dallas. In Dallas, in December, during 0.5 snowfall days, 0.31" (8mm) of snow is typically accumulated. In Dallas, during the entire year, snow falls for 3.7 days and aggregates up to 2.05" (52mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:31 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 4:42 pm PST.
Sunshine
In December, the average sunshine is 3.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. 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 daily high UV index of 2 during December translates into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
Is December cold?
What is the most humid month?
What is the average humidity in December?
What is the rainiest month?
How much does it rain in December?
How many days 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?
How many hours of sunshine does Dallas have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Dallas, OR
- Average high temperature in December: 44.2°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 (44.2°F).
- Average low temperature in December: 34°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 (34°F).
Average pressure in December
Dallas, OR
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in December
Dallas, OR
- Average wind speed in December: 4.6mph
The windiest month (with the highest average wind speed) is March (5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in December
Dallas, OR
- Average humidity in December: 89%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (69%).
Average rainfall in December
Dallas, OR
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is December (2.4").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in December
Dallas, OR
- Average rainfall days in December: 15.7 days
The month with the highest number of rainy days is March (17.4 days).
The month with the least rainy days is August (3.9 days).
Average snowfall in December
Dallas, OR
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Dallas, OR
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Dallas, OR
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in December
Dallas, OR
- Average sunshine days in December: 14 days
The month with the most sunshine days is July (26.1 days).
The month with the least sunshine days is March (11.6 days).
Average UV index in December
Dallas, 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
Dallas, OR
- Average cloud cover in December: 61
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Dallas, OR
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Dallas, Oregon, USA
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