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, characterized by an average high temperature of 39.7°F (4.3°C) and a low temperature of 29.8°F (-1.2°C), is generally the coldest month.Humidity
In Snoqualmie, the average relative humidity in December is 86%.Rainfall
In Snoqualmie, in December, during 18.5 rainfall days, 6.06" (154mm) of precipitation is typically accumulated. Throughout the year, there are 184.9 rainfall days, and 39.96" (1015mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Snoqualmie, during December, snow falls for 3.7 days and regularly aggregates up to 1.61" (41mm) of snow. Throughout the year, there are 17.4 snowfall days, and 11.38" (289mm) of snow is accumulated.Daylight
December has the shortest days of the year in Snoqualmie, with an average of 8h and 30min of daylight.On the first day of December in Snoqualmie, sunrise is at 7:35 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 4:26 pm PST.
Sunshine
January and December, with an average of 3.9h of sunshine, are months with the least sunshine in Snoqualmie.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Snoqualmie?
How cold is December in Snoqualmie?
What is the average humidity in December in Snoqualmie?
How many days does it rain in December in Snoqualmie?
How much does it snow in Snoqualmie in December?
What is the month with the shortest days in Snoqualmie?
How many hours of daylight does Snoqualmie have in December?
What time are sunrise and sunset in December in Snoqualmie?
What are the months with the least sunshine in Snoqualmie?
How long on average sun shines in December in Snoqualmie?
How high is the UV index in December in Snoqualmie?
Average temperature in December
Snoqualmie, WA
- Average high temperature in December: 39.7°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 (39.7°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is December (29.8°F).
Average pressure in December
Snoqualmie, WA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in December
Snoqualmie, WA
- Average wind speed in December: 4.6mph
The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in December
Snoqualmie, WA
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is July (71%).
Average rainfall in December
Snoqualmie, WA
- Average rainfall in December: 6.06"
The wettest month (with the highest rainfall) is January (6.1").
The driest months (with the least rainfall) are July and August (0.59").
Average rainfall days in December
Snoqualmie, WA
- Average rainfall days in December: 18.5 days
The month with the highest number of rainy days is March (20.5 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in December
Snoqualmie, WA
- Average snowfall in December: 1.61"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Snoqualmie, WA
- Average snowfall days in December: 3.7 days
The month with the highest number of snowfall days is February (5.4 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
Snoqualmie, WA
- Average daylight in December: 8h and 3min
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: 3h and 5min
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: 3h and 54min).
Average sunshine days in December
Snoqualmie, WA
- Average sunshine days in December: 10 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in December
Snoqualmie, 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 February (UV index 1).
Average cloud cover in December
Snoqualmie, WA
- Average cloud cover in December: 59
The months with the most cloud cover are January, February, March and December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Snoqualmie, WA
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Snoqualmie, Washington, USA
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