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, known for its average high temperature of 37.2°F (2.9°C) and an average low temperature of 27.7°F (-2.4°C), is the coldest month.Humidity
In December, the average relative humidity is 87%.Rainfall
In December, in Cascade Locks, the rain falls for 19.9 days. Throughout December, 6.93" (176mm) of precipitation is accumulated. In Cascade Locks, during the entire year, the rain falls for 181 days and collects up to 43.15" (1096mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Cascade Locks, during December, snow falls for 2.7 days and regularly aggregates up to 2.32" (59mm) of snow. In Cascade Locks, during the entire year, snow falls for 13.5 days and aggregates up to 12.95" (329mm) 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 the month, sunrise is at 7:28 am and sunset at 4:25 pm. On the last day of December, sunrise is at 7:48 am and sunset at 4:33 pm PST.
Sunshine
The average sunshine in December is 3.5h.UV index
In Cascade Locks, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What time of the year is the coldest in Cascade Locks?
How cold is it in Cascade Locks in December?
What is the average humidity in December in Cascade Locks?
How many days does it rain in December in Cascade Locks?
How much does it snow in Cascade Locks in December?
What is the month with the shortest days in Cascade Locks?
How many hours of daylight does Cascade Locks have in December?
When is the sunrise / sunset in December in Cascade Locks?
How many hours of sunshine does Cascade Locks have in December?
What is the UV index intensity in December in Cascade Locks?
Average temperature in December
Cascade Locks, OR
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (37.2°F).
- Average low temperature in December: 27.7°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 (27.7°F).
Average pressure in December
Cascade Locks, OR
- Average pressure in December: 30.12"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
Cascade Locks, OR
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is January (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in December
Cascade Locks, OR
- Average humidity in December: 87%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are July and August (66%).
Average rainfall in December
Cascade Locks, OR
- Average rainfall in December: 6.93"
The wettest month (with the highest rainfall) is January (7.48").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in December
Cascade Locks, OR
- Average rainfall days in December: 19.9 days
The month with the highest number of rainy days is March (21.7 days).
The month with the least rainy days is August (5 days).
Average snowfall in December
Cascade Locks, OR
- Average snowfall in December: 2.32"
The month with the highest snowfall is January (4.33").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Cascade Locks, OR
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is February (4.4 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
Cascade Locks, OR
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 3min
The months with the most sunshine are July and August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in December
Cascade Locks, OR
- Average sunshine days in December: 8.9 days
The month with the most sunshine days is August (24 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in December
Cascade Locks, 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 January (UV index 1).
Average cloud cover in December
Cascade Locks, OR
- Average cloud cover in December: 65
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Cascade Locks, OR
- Average visibility in December: 4mi
The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
Cascade Locks, Oregon, USA
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