December weather forecastKingston, WA

December

Weather in December

December, the first month of the winter in Kingston, is also a frosty month, with an average temperature fluctuating between 36.7°F (2.6°C) and 43.5°F (6.4°C).

Temperature

December, with average temperatures reaching a high of 43.5°F (6.4°C) and a low of 36.7°F (2.6°C), is the coldest month.

Humidity

January and December, with an average relative humidity of 84%, are the most humid months.

Rainfall

In Kingston, in December, during 10.8 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 106.5 rainfall days, and 9.09" (231mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Kingston, Washington, are January through March, November and December. In December, it is snowing for 1.1 days. Throughout December, 0.12" (3mm) of snow is accumulated. In Kingston, during the entire year, snow falls for 5 days and aggregates up to 1.34" (34mm) of snow.

Ocean temperature

In Kingston, the average seawater temperature in December is 46.6°F (8.1°C).
Note: With the appropriate swimsuit, one can swim in 46.6°F (8.1°C) even if temperatures dip below 50°F (10°C); otherwise, be ready for cold shock and breath issues. A fleeting swim around 55.4°F (13°C) is distressing.

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 7:38 am and sunset at 4:19 pm. On the last day of December, in Kingston, sunrise is at 7:58 am and sunset at 4:27 pm PST.

Sunshine

With an average of 4.5h of sunshine, December has the least sunshine of the year in Kingston.

UV index

The months with the lowest UV index in Kingston are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December is the month when Kingston, Washington, experiences its coldest temperatures, averaging a high of 43.5°F (6.4°C) and a low of 36.7°F (2.6°C).

During December, Kingston experiences an average high-temperature of 43.5°F (6.4°C) and a low-temperature of 36.7°F (2.6°C).

The months with the highest humidity in Kingston are January and December, with an average relative humidity of 84%.

In December, the average relative humidity in Kingston, Washington, is 84%.

In December, in Kingston, Washington, the rain falls for 10.8 days. Throughout December, 1.5" (38mm) of precipitation is accumulated.

In Kingston, Washington, in December, snow falls for 1.1 days, with typically accumulated 0.12" (3mm) of snow.

In December, the average ocean temperature in Kingston, Washington, is 46.6°F (8.1°C). Swimming in 46.6°F (8.1°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

The month with the shortest days in Kingston is December, with an average of 8h and 30min of daylight.

In Kingston, Washington, the average day length in December is 8h and 29min.

On the first day of December in Kingston, sunrise is at 7:38 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 4:27 pm PST.

The month with the least sunshine in Kingston, Washington, is December, with an average of 4.5h of sunshine.

In Kingston, Washington, the average sunshine duration in December is 4.5h.

The months with the lowest UV index in Kingston, Washington, are January, February, November and December, with an average maximum UV index of 2.

In Kingston, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

49.3°F

43.5°F

45.1°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.1mph

6.5mph

6.8mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.3

1.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

15.5

17.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Kingston, WA

Average high temperature in December: 43.5°F

The warmest month (with the highest average high temperature) is August (73.8°F).
The month with the lowest average high temperature is December (43.5°F).

Average low temperature in December: 36.7°F

The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (36.7°F).

Average pressure in December
Kingston, WA

Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

Average wind speed in December
Kingston, WA

Average wind speed in December: 5.9mph

The windiest months (with the highest average wind speed) are March and November (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

Average humidity in December
Kingston, WA

Average humidity in December: 84%

The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is July (72%).

Average rainfall in December
Kingston, WA

Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is January (1.57").
The driest month (with the least rainfall) is July (0.2").

Average rainfall days in December
Kingston, WA

Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is March (12.2 days).
The month with the least rainy days is August (3.6 days).

Average snowfall in December
Kingston, WA

Average snowfall in December: 0.12"

The month with the highest snowfall is February (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Kingston, WA

Average snowfall days in December: 1.1 days

The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in December
Kingston, 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
Kingston, 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 30min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).

Average sunshine days in December
Kingston, WA

Average sunshine days in December: 17.4 days

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is November (15.5 days).

Average UV index in December
Kingston, 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
Kingston, WA

Average cloud cover in December: 54

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 26).

Average visibility in December
Kingston, WA

Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).