December weather forecastLake Forest Park, WA
December
Weather in December
December, the first month of the winter in Lake Forest Park, is still a cold month, with an average temperature fluctuating between 42.6°F (5.9°C) and 35.1°F (1.7°C).Temperature
December, recording an average high temperature of 42.6°F (5.9°C) and a low temperature of 35.1°F (1.7°C), is Lake Forest Park's coldest month.Humidity
In Lake Forest Park, the average relative humidity in December is 84%.Rainfall
In Lake Forest Park, in December, during 15.8 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. In Lake Forest Park, during the entire year, the rain falls for 166.9 days and collects up to 21.93" (557mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 1.1 days. Throughout December, 0.24" (6mm) of snow is accumulated. In Lake Forest Park, during the entire year, snow falls for 6.6 days and aggregates up to 2.6" (66mm) of snow.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 7:37 am and sunset at 4:19 pm. On the last day of December, sunrise is at 7:57 am and sunset at 4:27 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 4.4h of sunshine.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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lake Forest Park, WA
- Average high temperature in December: 42.6°F
The warmest month (with the highest average high temperature) is August (74.8°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in December: 35.1°F
The month with the highest average low temperature is August (53.1°F).
The coldest months (with the lowest average low temperature) are February and December (35.1°F).
Average pressure in December
Lake Forest Park, WA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Lake Forest Park, WA
- Average wind speed in December: 4.9mph
The windiest months (with the highest average wind speed) are January and March (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in December
Lake Forest Park, WA
- Average humidity in December: 84%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (71%).
Average rainfall in December
Lake Forest Park, WA
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is January (2.87").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in December
Lake Forest Park, WA
- Average rainfall days in December: 15.8 days
The month with the highest number of rainy days is November (17.9 days).
The month with the least rainy days is August (6.9 days).
Average snowfall in December
Lake Forest Park, WA
- Average snowfall in December: 0.24"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Lake Forest Park, WA
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is February (2.5 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
Lake Forest Park, 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 24min
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 24min).
Average sunshine days in December
Lake Forest Park, WA
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is April (10.5 days).
Average UV index in December
Lake Forest Park, 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
Lake Forest Park, WA
- Average cloud cover in December: 55
The months with the most cloud cover are January and December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Lake Forest Park, WA
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).
