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
Bothell witnesses the coldest weather in December, with temperatures averaging a high of 42.6°F (5.9°C) and a low of 35.1°F (1.7°C).Humidity
In Bothell, the average relative humidity in December is 84%.Rainfall
In Bothell, in December, it is raining for 15.8 days, with typically 2.76" (70mm) of accumulated precipitation. Throughout the year, there are 166.9 rainfall days, and 21.93" (557mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Bothell, in December, during 1.1 snowfall days, 0.24" (6mm) of snow is typically accumulated. Throughout the year, there are 6.6 snowfall days, and 2.6" (66mm) of snow is accumulated.Daylight
With an average of 8h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:37 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:57 am and sunset at 4:26 pm PST.
Sunshine
January and December, with an average of 4.4h of sunshine, are months with the least 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 of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: An average UV index of 2 in December transforms into this advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to 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?
How cold is December?
What is the average humidity in December in Bothell?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Bothell have in December?
What time are sunrise and sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Bothell have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Bothell, 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
Bothell, 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
Bothell, 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
Bothell, 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
Bothell, 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
Bothell, 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
Bothell, 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
Bothell, 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
Bothell, 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 2min
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
Bothell, 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
Bothell, 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
Bothell, 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
Bothell, 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).
Bothell, Washington, USA
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