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
Scappoose's coldest temperatures are experienced in December, with average high temperatures of 42.8°F (6°C) and lows of 33.1°F (0.6°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In Scappoose, during December, the rain falls for 20.3 days and regularly aggregates up to 5.08" (129mm) of precipitation. In Scappoose, during the entire year, the rain falls for 181.3 days and collects up to 35.55" (903mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Scappoose, in December, during 0.7 snowfall days, 0.24" (6mm) of snow is typically accumulated. Throughout the year, there are 6.7 snowfall days, and 4.45" (113mm) of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:32 am and sunset at 4:28 pm. On the last day of December, sunrise is at 7:52 am and sunset at 4:37 pm PST.
Sunshine
In Scappoose, the average sunshine in December is 3.9h.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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
Is it cold during December?
What is the average humidity in December in Scappoose?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Scappoose have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Scappoose have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Scappoose, OR
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure in December
Scappoose, OR
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in December
Scappoose, OR
- Average wind speed in December: 4.6mph
The windiest month (with the highest average wind speed) is March (4.8mph).
The calmest month (with the lowest average wind speed) is September (4mph).
Average humidity in December
Scappoose, OR
- Average humidity in December: 86%
The months with the highest relative humidity are February and November (87%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in December
Scappoose, OR
- Average rainfall in December: 5.08"
The wettest month (with the highest rainfall) is January (5.24").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in December
Scappoose, OR
- Average rainfall days in December: 20.3 days
The month with the highest number of rainy days is March (21.1 days).
The months with the least rainy days are July and August (5.5 days).
Average snowfall in December
Scappoose, OR
- Average snowfall in December: 0.24"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Scappoose, OR
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (2.1 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
Scappoose, 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: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 3h and 48min).
Average sunshine days in December
Scappoose, OR
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is July (23.2 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in December
Scappoose, 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
Scappoose, OR
- Average cloud cover in December: 60
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Scappoose, OR
- Average visibility in December: 4mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
Scappoose, Oregon, USA
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