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
December brings the lowest temperatures, with an average high of 38.7°F (3.7°C) and an average low of 28.6°F (-1.9°C).Humidity
In Irrigon, Oregon, the average relative humidity in December is 77%.Rainfall
In December, in Irrigon, the rain falls for 11.5 days. Throughout December, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Irrigon, there are 106.1 rainfall days, and 7.76" (197mm) of precipitation is accumulated.Snowfall
Months with snowfall in Irrigon, Oregon, are January through March, September, November and December. In Irrigon, Oregon, in December, during 3.2 snowfall days, 1.22" (31mm) of snow is typically accumulated. Throughout the year, there are 10.3 snowfall days, and 6.02" (153mm) of snow is accumulated.Daylight
The month with the shortest days in Irrigon is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:19 am and sunset at 4:14 pm. On the last day of December, sunrise is at 7:39 am and sunset at 4:23 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.4h 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 hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What is the coldest month in Irrigon?
Is December cold in Irrigon?
What is the average humidity in December in Irrigon?
How many days does it rain in December in Irrigon?
How many days does it snow in December in Irrigon?
What is the month with the shortest days in Irrigon?
What is the average length of the day in December in Irrigon?
What time are sunrise and sunset in December in Irrigon?
What are the months with the least sunshine in Irrigon?
How long on average sun shines in December in Irrigon?
When is the lowest UV index in Irrigon?
How high is the UV index in December in Irrigon?
Average temperature in December
Irrigon, OR
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (38.7°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).
Average pressure in December
Irrigon, OR
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in December
Irrigon, OR
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is December (6.2mph).
Average humidity in December
Irrigon, OR
- Average humidity in December: 77%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in December
Irrigon, OR
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is March (1.02").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Irrigon, OR
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is July (3.8 days).
Average snowfall in December
Irrigon, OR
- Average snowfall in December: 1.22"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in December
Irrigon, OR
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is December (3.2 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Irrigon, OR
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in December
Irrigon, OR
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is February (14 days).
Average UV index in December
Irrigon, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Irrigon, OR
- Average cloud cover in December: 44
The months with the most cloud cover are January and December (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in December
Irrigon, OR
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Irrigon, Oregon, USA
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