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, marked by an average high-temperature of 42.8°F (6°C) and a low-temperature of 34.7°F (1.5°C), is the coldest month.Humidity
In Bellevue, Washington, the average relative humidity in December is 84%.Rainfall
The month with the most rainfall is December, when the rain falls for 12.5 days and typically aggregates up to 2.01" (51mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In December, in Bellevue, it is snowing for 1.1 days. Throughout December, 0.31" (8mm) of snow is accumulated. Throughout the year, there are 7 snowfall days, and 3.27" (83mm) of snow is accumulated.Daylight
With an average of 8h and 30min of daylight, December has the shortest days of the year in Bellevue.On the first day of December, sunrise is at 7:36 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 4:27 pm PST.
Sunshine
With an average of 4.2h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Bellevue are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
What part of the year is the coldest in Bellevue?
How cold does it get in Bellevue in December?
What is the average humidity in December in Bellevue?
What is the rainiest month in Bellevue?
How much does it rain in Bellevue in December?
How many days does it snow in December in Bellevue?
What is the month with the shortest days in Bellevue?
What is the average length of the day in December in Bellevue?
When are sunrise and sunset in December in Bellevue?
What is the month with the least sunshine in Bellevue?
How long on average sun shines in December in Bellevue?
When is the lowest UV index in Bellevue?
How high is the UV index in December in Bellevue?
Average temperature in December
Bellevue, WA
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is August (53.4°F).
The coldest month (with the lowest average low temperature) is February (34.5°F).
Average pressure in December
Bellevue, WA
- Average pressure in December: 30.09"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
Bellevue, WA
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is March (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in December
Bellevue, 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 (69%).
Average rainfall in December
Bellevue, WA
- Average rainfall in December: 2.01"
The wettest month (with the highest rainfall) is December (2.01").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in December
Bellevue, WA
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is August (4.1 days).
Average snowfall in December
Bellevue, WA
- Average snowfall in December: 0.31"
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
Bellevue, WA
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is February (3 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
Bellevue, 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: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average sunshine days in December
Bellevue, WA
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is February (13.8 days).
Average UV index in December
Bellevue, WA
- 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
Bellevue, WA
- Average cloud cover in December: 56
The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Bellevue, WA
- Average visibility in December: 5mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).
Bellevue, Washington, USA
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