December weather forecast
Kirkland, WA

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Weather in December

The end of the year sees Kirkland embracing the winter with colder temperatures and an uptick in precipitation. December brings the return of snow, albeit in smaller amounts than earlier in the year. The city becomes a winter wonderland with frequent snow showers adorning the landscape. Despite the onset of cold weather, the extent of frosty conditions remains comparatively mellow. As the holidays approach, December weather complements the year-end festivities, wrapping up the weather calendar on a charming note.

Temperature

Temperature records mark December as the coldest month, with highs averaging 42.8°F (6°C) and lows at 34.7°F (1.5°C).

Humidity

In December, the average relative humidity is 84%.

Rainfall

December is the month with the most rainfall. Rain falls for 18.6 days and accumulates 4.21" (107mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Kirkland, in December, snow falls for 1.5 days, with typically accumulated 0.39" (10mm) of snow. In Kirkland, Washington, during the entire year, snow falls for 10.2 days and aggregates up to 5.63" (143mm) 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

January and December, with an average of 4.4h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

Frequently asked questions

What time of the year is the coldest?

Kirkland's coldest month, December, generally records average temperatures ranging from a high of 42.8°F (6°C) to a low of 34.7°F (1.5°C).

Is December cold in Kirkland?

During December, Kirkland experiences an average high-temperature of 42.8°F (6°C) and a low-temperature of 34.7°F (1.5°C).

What is the average humidity in December?

The average relative humidity in December is 84%.

What is the wettest month?

December is the month with the most rainfall in Kirkland. Rain falls for 18.6 days and accumulates 4.21" (107mm) of precipitation.

How many days does it rain in December in Kirkland?

In December, the rain falls for 18.6 days. Throughout December, 4.21" (107mm) of precipitation is accumulated.

How much does it snow in December?

In Kirkland, in December, during 1.5 snowfall days, 0.39" (10mm) of snow is typically accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

The average day length in December is 8h and 30min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:37 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 4:27 pm PST.

What is the month with the least sunshine?

The months with the least sunshine are January and December, with an average of 4.4h of sunshine.

How long on average sun shines in December?

In December, the average sunshine duration is 4.4h.

What are the months with the lowest UV index?

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

How high is the UV index in December?

In Kirkland, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Kirkland, WA

Average temperature in December - Kirkland, WA
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is August (75.9°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 (53.2°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).

Average pressure in December
Kirkland, WA

Average pressure in December - Kirkland, 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
Kirkland, WA

Average wind speed in December - Kirkland, WA
  • Average wind speed in December: 4.8mph

The windiest months (with the highest average wind speed) are January and March (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).

Average humidity in December
Kirkland, WA

Average humidity in December - Kirkland, 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 (70%).

Average rainfall in December
Kirkland, WA

Average rainfall in December - Kirkland, WA
  • Average rainfall in December: 4.21"

The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is July (0.43").

Average rainfall days in December
Kirkland, WA

Average rainfall days in December - Kirkland, WA
  • Average rainfall days in December: 18.6 days

The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (6.1 days).

Average snowfall in December
Kirkland, WA

Average snowfall in December - Kirkland, WA
  • Average snowfall in December: 0.39"

The month with the highest snowfall is February (2.95").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Kirkland, WA

Average snowfall days in December - Kirkland, WA
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is February (3.9 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
Kirkland, WA

Average daylight in December / Average sunshine in December - Kirkland, 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
Kirkland, WA

Average sunshine days in December - Kirkland, WA
  • Average sunshine days in December: 11 days

The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is March (8.9 days).

Average UV index in December
Kirkland, WA

Average UV index in December - Kirkland, WA
  • Average UV index in December: 2

The month with the highest UV index is 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
Kirkland, WA

Average cloud cover in December - Kirkland, 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 25).

Average visibility in December
Kirkland, WA

Average visibility in December - Kirkland, 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).

Kirkland, Washington, USA

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