December weather forecastEverett, WA
December
Weather in December
December reinstates the winter weather in Everett, Washington with a noticeable reduction in temperature. It is similar to November with nearly equivalent temperature ranges and rainfall amounts. This month observes the longest nights of the year and correspondingly, the shortest daylight hours. Signaling the start of winter, trace amounts of snowfall make their appearance making for a potentially white Christmas. As the city moves from December into the new year, January doesn't provide much change in the children who love the weather.Temperature
December, with an average high of 42.3°F (5.7°C) and a low of 34.7°F (1.5°C), signifies the coldest month of the year in Everett, Washington.Humidity
The months with the highest humidity in Everett are January and December, with an average relative humidity of 85%.Rainfall
In Everett, in December, it is raining for 19.3 days, with typically 3.82" (97mm) of accumulated precipitation. Throughout the year, there are 179.1 rainfall days, and 29.57" (751mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Everett, during December, snow falls for 1.5 days and regularly aggregates up to 0.51" (13mm) of snow. Throughout the year, in Everett, Washington, there are 8.9 snowfall days, and 6.1" (155mm) of snow is accumulated.Ocean temperature
In Everett, the average seawater temperature in December is 46.6°F (8.1°C).Note: Entering waters of 46.6°F (8.1°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:38 am and sunset at 4:17 pm. On the last day of December, sunrise is at 7:58 am and sunset at 4:25 pm PST.
Sunshine
January and December, with an average of 4.2h of sunshine, are months with the least sunshine in Everett, Washington.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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 2 in December leads to these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Everett, WA
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in December
Everett, WA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Everett, WA
- Average wind speed in December: 5.4mph
The windiest months (with the highest average wind speed) are March and November (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in December
Everett, WA
- Average humidity in December: 85%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (73%).
Average rainfall in December
Everett, WA
- Average rainfall in December: 3.82"
The wettest month (with the highest rainfall) is November (4.06").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in December
Everett, WA
- Average rainfall days in December: 19.3 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in December
Everett, WA
- Average snowfall in December: 0.51"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Everett, WA
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Everett, WA
- Average sea temperature in December: 46.6°F
The best month for swimming (with the highest average sea temperature) is August (53.5°F).
The coldest month (with the lowest average sea temperature) is February (45.3°F).
Average daylight in December /
Average sunshine in December
Everett, WA
- Average daylight in December: 8h and 30min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 4h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in December
Everett, WA
- Average sunshine days in December: 10.1 days
The month with the most sunshine days is August (23.1 days).
The months with the least sunshine days are February and November (8.6 days).
Average UV index in December
Everett, WA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Everett, WA
- Average cloud cover in December: 57
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Everett, WA
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
