December weather forecastRavensdale, WA
December
Weather in December
The first month of the winter, December, is also an icy month in Ravensdale, Washington, with an average temperature varying between 32°F (0°C) and 40.8°F (4.9°C).Temperature
December is the month when Ravensdale experiences its coldest temperatures, averaging a high of 40.8°F (4.9°C) and a low of 32°F (0°C).Humidity
In December, the average relative humidity is 85%.Rainfall
The month with the most rainfall is December, when the rain falls for 18.7 days and typically aggregates up to 5.43" (138mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Ravensdale, during December, snow falls for 3.9 days and regularly aggregates up to 1.65" (42mm) of snow. In Ravensdale, during the entire year, snow falls for 19.7 days and aggregates up to 11.5" (292mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:35 am and sunset at 4:19 pm. On the last day of December, in Ravensdale, Washington, sunrise is at 7:54 am and sunset at 4:27 pm PST.
Sunshine
The months with the least sunshine in Ravensdale are January and December, with an average of 4.1h of sunshine.UV index
In December, the average daily maximum UV index in Ravensdale is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ravensdale, WA
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is December (40.8°F).
- Average low temperature in December: 32°F
The month with the highest average low temperature is August (50.2°F).
The coldest month (with the lowest average low temperature) is February (31.6°F).
Average pressure in December
Ravensdale, WA
- 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"Hg).
Average wind speed in December
Ravensdale, WA
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is January (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in December
Ravensdale, WA
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Ravensdale, WA
- Average rainfall in December: 5.43"
The wettest month (with the highest rainfall) is December (5.43").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in December
Ravensdale, WA
- Average rainfall days in December: 18.7 days
The month with the highest number of rainy days is March (20.5 days).
The month with the least rainy days is August (6.7 days).
Average snowfall in December
Ravensdale, WA
- Average snowfall in December: 1.65"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Ravensdale, WA
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Ravensdale, WA
- Average daylight in December: 8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 4h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 4h and 6min).
Average sunshine days in December
Ravensdale, WA
- Average sunshine days in December: 10.3 days
The month with the most sunshine days is August (22 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in December
Ravensdale, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Ravensdale, WA
- Average cloud cover in December: 57
The months with the most cloud cover are January, February, March and December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Ravensdale, WA
- 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 and December (4mi).
